Isotopes of Promethium

List of known isotopes of the element Promethium.

Isotope	t½	%	Spin/parity	Radius	Isotopic mass	Discovery
¹²⁸Pm	1 ±3 s	syn.	5 6 7	—	1.279·10⁸ ±322 keV/c²	1999
¹²⁹Pm	2.4 ±9 s	syn.	(5/2-)	—	1.289·10⁸ ±322 keV/c²	2004
¹³⁰Pm	2.6 ±2 s	syn.	(4 5 6)	—	1.299·10⁸ ±215 keV/c²	1985
¹³¹Pm	6.3 ±8 s	syn.	(11/2-)	—	1.309·10⁸ ±215 keV/c²	1998
¹³²Pm	6.2 ±6 s	syn.	(3+)	—	1.319·10⁸ ±160 keV/c²	1977
¹³³Pm	13.5 ±21 s	syn.	(3/2+)	—	1.329·10⁸ ±54 keV/c²	1977
¹³⁴Pm	5 s	syn.	(2+)	—	1.339·10⁸ ±45 keV/c²	1977
¹³⁵Pm	49 ±3 s	syn.	(3/2+ 5/2+)	—	1.349·10⁸ ±89 keV/c²	1975
¹³⁶Pm	300 ±50 s	syn.	(2)	—	1.359·10⁸ ±74.15 keV/c²	1988
¹³⁷Pm	2.4 ±1 m	syn.	11/2-	—	1.369·10⁸ ±14 keV/c²	1975
¹³⁸Pm	10 ±2 s	syn.	(1+)	—	1.379·10⁸ ±12.45 keV/c²	1973
¹³⁹Pm	4.15 ±5 m	syn.	(5/2)+	—	1.389·10⁸ ±14.58 keV/c²	1967
¹⁴⁰Pm	9.2 ±2 s	syn.	1+	—	1.399·10⁸ ±26 keV/c²	1966
¹⁴¹Pm	20.9 ±5 m	syn.	5/2+	—	1.409·10⁸ ±15 keV/c²	1952
¹⁴²Pm	40.5 ±5 s	syn.	1+	—	1.419·10⁸ ±25.33 keV/c²	1959
¹⁴³Pm	265 ±7 d	syn.	5/2+	—	1.429·10⁸ ±3.16 keV/c²	1952
¹⁴⁴Pm	363 ±14 d	syn.	5-	—	1.439·10⁸ ±3.126 keV/c²	1952
¹⁴⁵Pm	17.7 ±4 a	syn.	5/2+	—	1.449·10⁸ ±3.011 keV/c²	1951
¹⁴⁶Pm	5.53 ±5 a	syn.	3-	—	1.459·10⁸ ±4.589 keV/c²	1960
¹⁴⁷Pm	2.623 ±4 a	syn.	7/2+	—	1.469·10⁸ ±1.382 keV/c²	1947
¹⁴⁸Pm	5.368 ±7 d	syn.	1-	—	1.479·10⁸ ±6.108 keV/c²	1947
¹⁴⁹Pm	53.08 ±9 h	syn.	7/2+	—	1.489·10⁸ ±2.344 keV/c²	1947
¹⁵⁰Pm	2.698 ±15 h	syn.	(1-)	—	1.499·10⁸ ±21.5 keV/c²	1952
¹⁵¹Pm	28.4 ±4 h	syn.	5/2+	—	1.509·10⁸ ±4.949 keV/c²	1952
¹⁵²Pm	4.12 ±8 m	syn.	1+	—	1.519·10⁸ ±27.8 keV/c²	1958
¹⁵³Pm	5.25 ±2 m	syn.	5/2-	—	1.529·10⁸ ±9.729 keV/c²	1962
¹⁵⁴Pm	2.68 ±7 m	syn.	(3 4)	—	1.539·10⁸ ±26.86 keV/c²	1958
¹⁵⁵Pm	41.5 ±2 s	syn.	5/2-	—	1.549·10⁸ ±5.065 keV/c²	1982
¹⁵⁶Pm	26.7 ±10 s	syn.	4(+)	—	1.559·10⁸ ±1.275 keV/c²	1986
¹⁵⁷Pm	10.56 ±12 s	syn.	(5/2-)	—	1.569·10⁸ ±7.521 keV/c²	1987
¹⁵⁸Pm	4.8 ±5 s	syn.	—	—	1.579·10⁸ ±0.953 keV/c²	1987
¹⁵⁹Pm	1.5 ±2 s	syn.	—	—	1.589·10⁸ ±10.77 keV/c²	1998
¹⁶⁰Pm	725 ±57 ms	syn.	—	—	1.599·10⁸ ±2.2 keV/c²	2012
¹⁶¹Pm	1.05 ±15 s	syn.	(5/2-)	—	1.609·10⁸ ±9.7 keV/c²	2012
¹⁶²Pm	0.63 ±18 s	syn.	(2+)	—	1.619·10⁸ ±322 keV/c²	2012
¹⁶³Pm	0.43 ±35 s	syn.	(5/2-)	—	1.629·10⁸ ±429 keV/c²	2012
¹⁶⁴Pm	stab.	syn.	—	—	1.639·10⁸ ±429 keV/c²	2018
¹⁶⁵Pm	stab.	syn.	—	—	1.649·10⁸ ±537 keV/c²	2018

128PmPromethium-128

Classification	z: 61; n: 67; m: 128
Half life	1 ±3 s
Natural abundance	synthetic nuclide
Spin/parity	5 6 7
Decay modes	electron capture (EC); electron capture + proton emission; α decay
Discovery	1999
Mass excess	-48,220 ±300 keV
Binding energy	8,075 ±2 keV
Single-particle energy	-401 ±424 keV
Neutron separation energy	10,980 ±500 keV
Q value for electron capture	12,310 ±360.5 keV
β⁻ decay energy	-9,070 ±583 keV

Point at nuclide Decay chain of Promethium-128

129PmPromethium-129

Classification	z: 61; n: 68; m: 129
Half life	2.4 ±9 s
Natural abundance	synthetic nuclide
Spin/parity	(5/2-)
Decay modes	electron capture + β⁺ decay; proton emission; electron capture + proton emission
Discovery	2004
Mass excess	-53,180 ±300 keV
Binding energy	8,114 ±2 keV
Single-particle energy	-61 ±361 keV
Neutron separation energy	13,030 ±424 keV
Q value for electron capture	9,195 ±361.6 keV
β⁻ decay energy	-10,850 ±583 keV
β⁻ decay energy with neutron	-22,110 ±583 keV

Point at nuclide Decay chain of Promethium-129

130PmPromethium-130

Classification	z: 61; n: 69; m: 130
Half life	2.6 ±2 s
Natural abundance	synthetic nuclide
Spin/parity	(4 5 6)
Decay modes	electron capture + β⁺ decay; electron capture + proton emission
Discovery	1985
Mass excess	-55,470 ±200 keV
Binding energy	8,131 ±2 keV
Single-particle energy	384 ±284 keV
Neutron separation energy	10,360 ±361 keV
Q value for electron capture	11,120 ±201.9 keV
β⁻ decay energy	-7,770 ±447 keV
β⁻ decay energy with neutron	-21,220 ±539 keV

Point at nuclide Decay chain of Promethium-130

131PmPromethium-131

Classification	z: 61; n: 70; m: 131
Half life	6.3 ±8 s
Natural abundance	synthetic nuclide
Spin/parity	(11/2-)
Decay modes	electron capture + β⁺ decay
Discovery	1998
Mass excess	-59,770 ±200 keV
Binding energy	8,163 ±2 keV
Single-particle energy	463 ±202 keV
Neutron separation energy	12,370 ±283 keV
Q value for electron capture	7,998 ±201.8 keV
β⁻ decay energy	-9,490 ±447 keV
β⁻ decay energy with neutron	-20,150 ±447 keV

Point at nuclide Decay chain of Promethium-131

132PmPromethium-132

Classification	z: 61; n: 71; m: 132
Half life	6.2 ±6 s
Natural abundance	synthetic nuclide
Spin/parity	(3+)
Decay modes	electron capture + β⁺ decay; electron capture + proton emission
Discovery	1977
Mass excess	-61,630 ±149 keV
Binding energy	8,177 ±1 keV
Single-particle energy	1,149 ±152 keV
Neutron separation energy	9,929 ±250 keV
Q value for electron capture	9,797 ±150.9 keV
β⁻ decay energy	-6,488 ±335 keV
β⁻ decay energy with neutron	-19,420 ±426 keV

Point at nuclide Decay chain of Promethium-132

133PmPromethium-133

Classification	z: 61; n: 72; m: 133
Half life	13.5 ±21 s
Natural abundance	synthetic nuclide
Spin/parity	(3/2+)
Decay modes	electron capture + β⁺ decay
Discovery	1977
Mass excess	-65,410 ±50.3 keV
Binding energy	8,204 ±0.3782 keV
Single-particle energy	1,270 ±55.82 keV
Neutron separation energy	11,850 ±157 keV
Q value for electron capture	6,924 ±68.55 keV
β⁻ decay energy	-8,177 ±302 keV
β⁻ decay energy with neutron	-18,340 ±304 keV

Point at nuclide Decay chain of Promethium-133

134PmPromethium-134

Classification	z: 61; n: 73; m: 134
Half life	5 s
Natural abundance	synthetic nuclide
Spin/parity	(2+)
Decay modes	electron capture + β⁺ decay
Discovery	1977
Mass excess	-66,770 ±41.91 keV
Binding energy	8,213 ±0.3128 keV
Single-particle energy	1,720 ±62.65 keV
Neutron separation energy	9,427 ±65.47 keV
Q value for electron capture	8,882 ±43.55 keV
β⁻ decay energy	-5,388 ±200 keV
β⁻ decay energy with neutron	-17,610 ±301 keV

Point at nuclide Decay chain of Promethium-134

135PmPromethium-135

Classification	z: 61; n: 74; m: 135
Half life	49 ±3 s
Natural abundance	synthetic nuclide
Spin/parity	(3/2+ 5/2+)
Decay modes	electron capture + β⁺ decay
Discovery	1975
Mass excess	-70,070 ±82.9 keV
Binding energy	8,236 ±0.6141 keV
Single-particle energy	1,704 ±83.74 keV
Neutron separation energy	11,360 ±92.89 keV
Q value for electron capture	6,151 ±85.08 keV
β⁻ decay energy	-7,206 ±175.4 keV
β⁻ decay energy with neutron	-16,760 ±212 keV

Point at nuclide Decay chain of Promethium-135

136PmPromethium-136

Classification	z: 61; n: 75; m: 136
Half life	300 ±50 s
Natural abundance	synthetic nuclide
Spin/parity	(2)
Decay modes	electron capture + β⁺ decay
Discovery	1988
Mass excess	-71,170 ±69.07 keV
Binding energy	8,243 ±0.5079 keV
Single-particle energy	2,245 ±71.67 keV
Neutron separation energy	9,178 ±107.9 keV
Q value for electron capture	8,029 ±70.07 keV
β⁻ decay energy	-4,360 ±70.19 keV
β⁻ decay energy with neutron	-16,390 ±169.3 keV

Point at nuclide Decay chain of Promethium-136

137PmPromethium-137

Classification	z: 61; n: 76; m: 137
Half life	2.4 ±1 m
Natural abundance	synthetic nuclide
Spin/parity	11/2-
Decay modes	electron capture + β⁺ decay
Discovery	1975
Mass excess	-74,080 ±13.04 keV
Binding energy	8,263 ±0.0952 keV
Single-particle energy	2,162 ±17.59 keV
Neutron separation energy	10,970 ±70.29 keV
Q value for electron capture	5,511 ±17.53 keV
β⁻ decay energy	-6,082 ±31.44 keV
β⁻ decay energy with neutron	-15,340 ±18.06 keV

Point at nuclide Decay chain of Promethium-137

138PmPromethium-138

Classification	z: 61; n: 77; m: 138
Half life	10 ±2 s
Natural abundance	synthetic nuclide
Spin/parity	(1+)
Decay modes	electron capture + β⁺ decay
Discovery	1973
Mass excess	-74,920 ±11.6 keV
Binding energy	8,268 ±0.0841 keV
Single-particle energy	2,619 ±16.49 keV
Neutron separation energy	8,912 ±17.45 keV
Q value for electron capture	7,102 ±16.4 keV
β⁻ decay energy	-3,417 ±16.56 keV
β⁻ decay energy with neutron	-15,000 ±30.87 keV
Magnetic dipole moment	3.2 ±0.9 μN

Point at nuclide Decay chain of Promethium-138

139PmPromethium-139

Classification	z: 61; n: 78; m: 139
Half life	4.15 ±5 m
Natural abundance	synthetic nuclide
Spin/parity	(5/2)+
Decay modes	electron capture + β⁺ decay
Discovery	1967
Mass excess	-77,510 ±13.58 keV
Binding energy	8,285 ±0.0978 keV
Single-particle energy	2,772 ±17.86 keV
Neutron separation energy	10,650 ±17.86 keV
Q value for electron capture	4,515 ±30.69 keV
β⁻ decay energy	-5,121 ±17.4 keV
β⁻ decay energy with neutron	-14,080 ±18 keV

Point at nuclide Decay chain of Promethium-139

140PmPromethium-140

Classification	z: 61; n: 79; m: 140
Half life	9.2 ±2 s
Natural abundance	synthetic nuclide
Spin/parity	1+
Decay modes	electron capture + β⁺ decay
Discovery	1966
Mass excess	-78,220 ±24.22 keV
Binding energy	8,289 ±0.173 keV
Single-particle energy	3,484 ±36.66 keV
Neutron separation energy	8,782 ±27.77 keV
Q value for electron capture	6,045 ±24.4 keV
β⁻ decay energy	-2,757 ±27.25 keV
β⁻ decay energy with neutron	-13,910 ±26.55 keV

Point at nuclide Decay chain of Promethium-140

141PmPromethium-141

Classification	z: 61; n: 80; m: 141
Half life	20.9 ±5 m
Natural abundance	synthetic nuclide
Spin/parity	5/2+
Decay modes	electron capture + β⁺ decay
Discovery	1952
Mass excess	-80,530 ±13.97 keV
Binding energy	8,303 ±0.0991 keV
Single-particle energy	3,554 ±14.34 keV
Neutron separation energy	10,380 ±27.96 keV
Q value for electron capture	3,668 ±14.33 keV
β⁻ decay energy	-4,589 ±16.37 keV
β⁻ decay energy with neutron	-13,140 ±18.74 keV

Point at nuclide Decay chain of Promethium-141

142PmPromethium-142

Classification	z: 61; n: 81; m: 142
Half life	40.5 ±5 s
Natural abundance	synthetic nuclide
Spin/parity	1+
Decay modes	electron capture + β⁺ decay
Discovery	1959
Mass excess	-81,150 ±23.59 keV
Binding energy	8,306 ±0.1662 keV
Single-particle energy	4,238 ±23.8 keV
Neutron separation energy	8,689 ±27.42 keV
Q value for electron capture	4,808 ±23.62 keV
β⁻ decay energy	-2,160 ±23.65 keV
β⁻ decay energy with neutron	-13,280 ±25.08 keV

Point at nuclide Decay chain of Promethium-142

143PmPromethium-143

Classification	z: 61; n: 82; m: 143
Half life	265 ±7 d
Natural abundance	synthetic nuclide
Spin/parity	5/2+
Decay modes	electron capture + β⁺ decay; β⁺ decay
Discovery	1952
Mass excess	-82,970 ±2.944 keV
Binding energy	8,317 ±0.0206 keV
Single-particle energy	4,299 ±2.682 keV
Neutron separation energy	9,890 ±23.77 keV
Q value for electron capture	1,041 ±3.2 keV
β⁻ decay energy	-3,444 ±3.56 keV
β⁻ decay energy with neutron	-12,060 ±2.956 keV
Magnetic dipole moment	3.8 ±0.5 μN

Point at nuclide Decay chain of Promethium-143

144PmPromethium-144

Classification	z: 61; n: 83; m: 144
Half life	363 ±14 d
Natural abundance	synthetic nuclide
Spin/parity	5-
Decay modes	electron capture + β⁺ decay
Discovery	1952
Mass excess	-81,420 ±2.912 keV
Binding energy	8,305 ±0.0202 keV
Single-particle energy	4,702 ±2.646 keV
Neutron separation energy	6,526 ±1.528 keV
Q value for electron capture	2,331 ±3.171 keV
β⁻ decay energy	549.5 ±2.667 keV
β⁻ decay energy with neutron	-9,971 ±3.529 keV
Magnetic dipole moment	1.69 ±0.14 μN

Point at nuclide Decay chain of Promethium-144

145PmPromethium-145

Classification	z: 61; n: 84; m: 145
Half life	17.7 ±4 a
Natural abundance	synthetic nuclide
Spin/parity	5/2+
Decay modes	electron capture (EC); α decay
Discovery	1951
Mass excess	-81,270 ±2.805 keV
Binding energy	8,302 ±0.0193 keV
Single-particle energy	4,808 ±2.526 keV
Neutron separation energy	7,922 ±1.527 keV
Q value for electron capture	164.4 ±3.08 keV
β⁻ decay energy	-616.1 ±2.539 keV
β⁻ decay energy with neutron	-7,374 ±2.537 keV
Magnetic dipole moment	3.8 ±0.16 μN
Electric quadrupole moment	0.23 ±0.08 b

Point at nuclide Decay chain of Promethium-145

146PmPromethium-146

Classification	z: 61; n: 85; m: 146
Half life	5.53 ±5 a
Natural abundance	synthetic nuclide
Spin/parity	3-
Decay modes	electron capture (EC); β⁻ decay
Discovery	1960
Mass excess	-79,460 ±4.275 keV
Binding energy	8,288 ±0.0293 keV
Single-particle energy	5,311 ±4.118 keV
Neutron separation energy	6,258 ±4.802 keV
Q value for electron capture	1,471 ±4.461 keV
β⁻ decay energy	1,542 ±3 keV
β⁻ decay energy with neutron	-6,875 ±4.139 keV

Point at nuclide Decay chain of Promethium-146

147PmPromethium-147

Classification	z: 61; n: 86; m: 147
Half life	2.623 ±4 a
Natural abundance	synthetic nuclide
Spin/parity	7/2+
Decay modes	β⁻ decay
Discovery	1947
Mass excess	-79,050 ±1.288 keV
Binding energy	8,284 ±0.0088 keV
Single-particle energy	5,405 ±0.5639 keV
Neutron separation energy	7,658 ±4.14 keV
Q value for electron capture	-895.2 ±1.81 keV
β⁻ decay energy	224 ±0.294 keV
β⁻ decay energy with neutron	-6,117 ±2.853 keV
Magnetic dipole moment	2.58 ±0.07 μN
Electric quadrupole moment	0.74 ±0.2 b

Point at nuclide Decay chain of Promethium-147

148PmPromethium-148

Classification	z: 61; n: 87; m: 148
Half life	5.368 ±7 d
Natural abundance	synthetic nuclide
Spin/parity	1-
Decay modes	β⁻ decay
Discovery	1947
Mass excess	-76,870 ±5.69 keV
Binding energy	8,268 ±0.0384 keV
Single-particle energy	6,008 ±5.655 keV
Neutron separation energy	5,895 ±5.65 keV
Q value for electron capture	542.1 ±6.049 keV
β⁻ decay energy	2,470 ±5.64 keV
β⁻ decay energy with neutron	-5,672 ±5.644 keV
Magnetic dipole moment	2.1 ±0.2 μN
Electric quadrupole moment	0.2 ±0.2 b

Point at nuclide Decay chain of Promethium-148

149PmPromethium-149

Classification	z: 61; n: 88; m: 149
Half life	53.08 ±9 h
Natural abundance	synthetic nuclide
Spin/parity	7/2+
Decay modes	β⁻ decay
Discovery	1947
Mass excess	-76,070 ±2.184 keV
Binding energy	8,261 ±0.0147 keV
Single-particle energy	5,945 ±2.457 keV
Neutron separation energy	7,269 ±5.877 keV
Q value for electron capture	-1,689 ±2.998 keV
β⁻ decay energy	1,071 ±1.874 keV
β⁻ decay energy with neutron	-4,800 ±2.028 keV
Magnetic dipole moment	3.3 ±0.5 μN

Point at nuclide Decay chain of Promethium-149

150PmPromethium-150

Classification	z: 61; n: 89; m: 150
Half life	2.698 ±15 h
Natural abundance	synthetic nuclide
Spin/parity	(1-)
Decay modes	β⁻ decay
Discovery	1952
Mass excess	-73,600 ±20.03 keV
Binding energy	8,243 ±0.1335 keV
Single-particle energy	6,510 ±20.08 keV
Neutron separation energy	5,604 ±20.09 keV
Q value for electron capture	82.61 ±20.06 keV
β⁻ decay energy	3,454 ±20 keV
β⁻ decay energy with neutron	-4,533 ±20 keV

Point at nuclide Decay chain of Promethium-150

151PmPromethium-151

Classification	z: 61; n: 90; m: 151
Half life	28.4 ±4 h
Natural abundance	synthetic nuclide
Spin/parity	5/2+
Decay modes	β⁻ decay
Discovery	1952
Mass excess	-73,390 ±4.611 keV
Binding energy	8,241 ±0.0305 keV
Single-particle energy	6,995 ±4.472 keV
Neutron separation energy	7,860 ±20.49 keV
Q value for electron capture	-2,444 ±4.748 keV
β⁻ decay energy	1,190 ±4.475 keV
β⁻ decay energy with neutron	-4,407 ±4.474 keV
Magnetic dipole moment	1.8 ±0.2 μN
Electric quadrupole moment	2.2 ±0.9 b

Point at nuclide Decay chain of Promethium-151

152PmPromethium-152

Classification	z: 61; n: 91; m: 152
Half life	4.12 ±8 m
Natural abundance	synthetic nuclide
Spin/parity	1+
Decay modes	β⁻ decay
Discovery	1958
Mass excess	-71,260 ±25.9 keV
Binding energy	8,226 ±0.1704 keV
Single-particle energy	7,600 ±25.88 keV
Neutron separation energy	5,939 ±26.26 keV
Q value for electron capture	-1,105 ±35.63 keV
β⁻ decay energy	3,508 ±25.88 keV
β⁻ decay energy with neutron	-4,750 ±25.88 keV

Point at nuclide Decay chain of Promethium-152

153PmPromethium-153

Classification	z: 61; n: 92; m: 153
Half life	5.25 ±2 m
Natural abundance	synthetic nuclide
Spin/parity	5/2-
Decay modes	β⁻ decay
Discovery	1962
Mass excess	-70,650 ±9.063 keV
Binding energy	8,221 ±0.0592 keV
Single-particle energy	7,787 ±26.08 keV
Neutron separation energy	7,464 ±27.43 keV
Q value for electron capture	-3,318 ±9.47 keV
β⁻ decay energy	1,912 ±9.082 keV
β⁻ decay energy with neutron	-3,957 ±9.081 keV

Point at nuclide Decay chain of Promethium-153

154PmPromethium-154

Classification	z: 61; n: 93; m: 154
Half life	2.68 ±7 m
Natural abundance	synthetic nuclide
Spin/parity	(3 4)
Decay modes	β⁻ decay
Discovery	1958
Mass excess	-68,270 ±25.02 keV
Binding energy	8,204 ±0.1625 keV
Single-particle energy	8,225 ±25.17 keV
Neutron separation energy	5,689 ±26.61 keV
Q value for electron capture	-2,687 ±25 keV
β⁻ decay energy	4,188 ±25.05 keV
β⁻ decay energy with neutron	-3,778 ±25.04 keV

Point at nuclide Decay chain of Promethium-154

155PmPromethium-155

Classification	z: 61; n: 94; m: 155
Half life	41.5 ±2 s
Natural abundance	synthetic nuclide
Spin/parity	5/2-
Decay modes	β⁻ decay
Discovery	1982
Mass excess	-66,950 ±4.719 keV
Binding energy	8,195 ±0.0304 keV
Single-particle energy	8,649 ±4.828 keV
Neutron separation energy	6,744 ±25.46 keV
Q value for electron capture	-4,657 ±10.29 keV
β⁻ decay energy	3,251 ±4.902 keV
β⁻ decay energy with neutron	-2,556 ±4.895 keV

Point at nuclide Decay chain of Promethium-155

156PmPromethium-156

Classification	z: 61; n: 95; m: 156
Half life	26.7 ±10 s
Natural abundance	synthetic nuclide
Spin/parity	4(+)
Decay modes	β⁻ decay
Discovery	1986
Mass excess	-64,170 ±1.188 keV
Binding energy	8,176 ±0.0076 keV
Single-particle energy	9,172 ±9.227 keV
Neutron separation energy	5,298 ±4.86 keV
Q value for electron capture	-3,965 ±1.764 keV
β⁻ decay energy	5,193 ±8.604 keV
β⁻ decay energy with neutron	-2,047 ±1.784 keV

Point at nuclide Decay chain of Promethium-156

157PmPromethium-157

Classification	z: 61; n: 96; m: 157
Half life	10.56 ±12 s
Natural abundance	synthetic nuclide
Spin/parity	(5/2-)
Decay modes	β⁻ decay
Discovery	1987
Mass excess	-62,300 ±7.006 keV
Binding energy	8,164 ±0.0446 keV
Single-particle energy	9,383 ±7.126 keV
Neutron separation energy	6,201 ±7.102 keV
Q value for electron capture	-5,803 ±7.325 keV
β⁻ decay energy	4,380 ±8.265 keV
β⁻ decay energy with neutron	-1,008 ±11.03 keV

Point at nuclide Decay chain of Promethium-157

158PmPromethium-158

Classification	z: 61; n: 97; m: 158
Half life	4.8 ±5 s
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay
Discovery	1987
Mass excess	-59,110 ±0.888 keV
Binding energy	8,143 ±0.0056 keV
Single-particle energy	9,900 ±2.314 keV
Neutron separation energy	4,880 ±7.062 keV
Q value for electron capture	-5,272 ±1.57 keV
β⁻ decay energy	6,145 ±4.863 keV
β⁻ decay energy with neutron	-499.9 ±4.521 keV

Point at nuclide Decay chain of Promethium-158

159PmPromethium-159

Classification	z: 61; n: 98; m: 159
Half life	1.5 ±2 s
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay
Discovery	1998
Mass excess	-56,560 ±10.03 keV
Binding energy	8,126 ±0.0631 keV
Single-particle energy	10,000 ±10.12 keV
Neutron separation energy	5,519 ±10.07 keV
Q value for electron capture	-6,831 ±31.45 keV
β⁻ decay energy	5,653 ±11.64 keV
β⁻ decay energy with neutron	626.1 ±11.1 keV

Point at nuclide Decay chain of Promethium-159

160PmPromethium-160

Classification	z: 61; n: 99; m: 160
Half life	725 ±57 ms
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2012
Mass excess	-52,900 ±2.049 keV
Binding energy	8,103 ±0.0128 keV
Single-particle energy	10,450 ±29.87 keV
Neutron separation energy	4,411 ±10.24 keV
Q value for electron capture	-6,171 ±46.62 keV
β⁻ decay energy	7,338 ±2.833 keV
β⁻ decay energy with neutron	1,241 ±6.277 keV

Point at nuclide Decay chain of Promethium-160

161PmPromethium-161

Classification	z: 61; n: 100; m: 161
Half life	1.05 ±15 s
Natural abundance	synthetic nuclide
Spin/parity	(5/2-)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2012
Mass excess	-50,090 ±9.035 keV
Binding energy	8,085 ±0.0561 keV
Single-particle energy	10,650 ±47.44 keV
Neutron separation energy	5,263 ±9.265 keV
Q value for electron capture	-7,857 ±400.1 keV
β⁻ decay energy	6,585 ±11.31 keV
β⁻ decay energy with neutron	2,075 ±9.244 keV

Point at nuclide Decay chain of Promethium-161

162PmPromethium-162

Classification	z: 61; n: 101; m: 162
Half life	0.63 ±18 s
Natural abundance	synthetic nuclide
Spin/parity	(2+)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2012
Mass excess	-46,040 ±300 keV
Binding energy	8,061 ±2 keV
Single-particle energy	11,090 ±500 keV
Neutron separation energy	4,025 ±300 keV
Q value for electron capture	-7,030 ±500 keV
β⁻ decay energy	8,339 ±300 keV
β⁻ decay energy with neutron	2,561 ±300 keV

Point at nuclide Decay chain of Promethium-162

163PmPromethium-163

Classification	z: 61; n: 102; m: 163
Half life	0.43 ±35 s
Natural abundance	synthetic nuclide
Spin/parity	(5/2-)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2012
Mass excess	-42,960 ±400 keV
Binding energy	8,042 ±2 keV
Single-particle energy	11,230 ±565 keV
Neutron separation energy	4,991 ±500 keV
Q value for electron capture	-8,880 ±640.3 keV
β⁻ decay energy	7,640 ±400 keV
β⁻ decay energy with neutron	3,348 ±400 keV

Point at nuclide Decay chain of Promethium-163

164PmPromethium-164

Classification	z: 61; n: 103; m: 164
Half life	stable nuclide
Natural abundance	synthetic nuclide
Discovery	2018
Mass excess	-38,360 ±400 keV
Binding energy	8,014 ±2 keV
Single-particle energy	11,560 ±640 keV
Neutron separation energy	3,472 ±565 keV
β⁻ decay energy	9,565 ±400 keV
β⁻ decay energy with neutron	4,168 ±400 keV

Point at nuclide

165PmPromethium-165

Classification	z: 61; n: 104; m: 165
Half life	stable nuclide
Natural abundance	synthetic nuclide
Discovery	2018
Mass excess	-34,670 ±500 keV
Binding energy	7,992 ±3 keV
Neutron separation energy	4,382 ±640 keV
β⁻ decay energy	8,840 ±640 keV
β⁻ decay energy with neutron	5,184 ±500 keV

Point at nuclide

Isotopes of Promethium

128PmPromethium-128ads_clickcall_splitdownload

129PmPromethium-129ads_clickcall_splitdownload

130PmPromethium-130ads_clickcall_splitdownload

131PmPromethium-131ads_clickcall_splitdownload

132PmPromethium-132ads_clickcall_splitdownload

133PmPromethium-133ads_clickcall_splitdownload

134PmPromethium-134ads_clickcall_splitdownload

135PmPromethium-135ads_clickcall_splitdownload

136PmPromethium-136ads_clickcall_splitdownload

137PmPromethium-137ads_clickcall_splitdownload

138PmPromethium-138ads_clickcall_splitdownload

139PmPromethium-139ads_clickcall_splitdownload

140PmPromethium-140ads_clickcall_splitdownload

141PmPromethium-141ads_clickcall_splitdownload

142PmPromethium-142ads_clickcall_splitdownload

143PmPromethium-143ads_clickcall_splitdownload

144PmPromethium-144ads_clickcall_splitdownload

145PmPromethium-145ads_clickcall_splitdownload

146PmPromethium-146ads_clickcall_splitdownload

147PmPromethium-147ads_clickcall_splitdownload

148PmPromethium-148ads_clickcall_splitdownload

149PmPromethium-149ads_clickcall_splitdownload

150PmPromethium-150ads_clickcall_splitdownload

151PmPromethium-151ads_clickcall_splitdownload

152PmPromethium-152ads_clickcall_splitdownload

153PmPromethium-153ads_clickcall_splitdownload

154PmPromethium-154ads_clickcall_splitdownload

155PmPromethium-155ads_clickcall_splitdownload

156PmPromethium-156ads_clickcall_splitdownload

157PmPromethium-157ads_clickcall_splitdownload

158PmPromethium-158ads_clickcall_splitdownload

159PmPromethium-159ads_clickcall_splitdownload

160PmPromethium-160ads_clickcall_splitdownload

161PmPromethium-161ads_clickcall_splitdownload

162PmPromethium-162ads_clickcall_splitdownload

163PmPromethium-163ads_clickcall_splitdownload

164PmPromethium-164ads_clickdownload

165PmPromethium-165ads_clickdownload

128PmPromethium-128

129PmPromethium-129

130PmPromethium-130

131PmPromethium-131

132PmPromethium-132

133PmPromethium-133

134PmPromethium-134

135PmPromethium-135

136PmPromethium-136

137PmPromethium-137

138PmPromethium-138

139PmPromethium-139

140PmPromethium-140

141PmPromethium-141

142PmPromethium-142

143PmPromethium-143

144PmPromethium-144

145PmPromethium-145

146PmPromethium-146

147PmPromethium-147

148PmPromethium-148

149PmPromethium-149

150PmPromethium-150

151PmPromethium-151

152PmPromethium-152

153PmPromethium-153

154PmPromethium-154

155PmPromethium-155

156PmPromethium-156

157PmPromethium-157

158PmPromethium-158

159PmPromethium-159

160PmPromethium-160

161PmPromethium-161

162PmPromethium-162

163PmPromethium-163

164PmPromethium-164

165PmPromethium-165