Isotopes of Terbium

List of known isotopes of the element Terbium.

Isotope	t½	%	Spin/parity	Radius	Isotopic mass	Discovery
¹³⁵Tb	0.94 ± ms	syn.	(7/2-)	—	1.349·10⁸ ±429 keV/c²	2004
¹³⁸Tb	200 ns	syn.	—	—	1.379·10⁸ ±322 keV/c²	1993
¹³⁹Tb	1.6 ±2 s	syn.	—	—	1.389·10⁸ ±320 keV/c²	1999
¹⁴⁰Tb	2.29 ±15 s	syn.	(7+)	—	1.399·10⁸ ±859.3 keV/c²	1986
¹⁴¹Tb	3.5 ±2 s	syn.	(5/2-)	—	1.409·10⁸ ±113 keV/c²	1986
¹⁴²Tb	597 ±17 ms	syn.	1+	—	1.419·10⁸ ±752 keV/c²	1991
¹⁴³Tb	12 ±1 s	syn.	(11/2-)	—	1.429·10⁸ ±55 keV/c²	1985
¹⁴⁴Tb	1 s	syn.	1+	—	1.439·10⁸ ±30 keV/c²	1982
¹⁴⁵Tb	stab.	syn.	(3/2+)	—	1.449·10⁸ ±119 keV/c²	1981
¹⁴⁶Tb	8 ±4 s	syn.	1+	—	1.459·10⁸ ±48.15 keV/c²	1974
¹⁴⁷Tb	1.64 ±3 h	syn.	(1/2+)	4.92 ±0.1508 fm	1.469·10⁸ ±8.691 keV/c²	1969
¹⁴⁸Tb	60 ±1 m	syn.	2-	4.929 ±0.1507 fm	1.479·10⁸ ±13.37 keV/c²	1960
¹⁴⁹Tb	4.12 ±3 h	syn.	1/2+	4.942 ±0.1506 fm	1.489·10⁸ ±3.895 keV/c²	1950
¹⁵⁰Tb	3.48 ±16 h	syn.	(2)-	4.949 ±0.1505 fm	1.499·10⁸ ±7.912 keV/c²	1959
¹⁵¹Tb	17.6 ±14 h	syn.	1/2(+)	4.963 ±0.1504 fm	1.509·10⁸ ±4.395 keV/c²	1953
¹⁵²Tb	17.5 ±1 h	syn.	2-	4.968 ±0.1504 fm	1.519·10⁸ ±42.95 keV/c²	1959
¹⁵³Tb	2.34 ±1 d	syn.	5/2+	4.995 ±0.1502 fm	1.529·10⁸ ±4.237 keV/c²	1957
¹⁵⁴Tb	21.5 ±4 h	syn.	0	5.033 ±0.1501 fm	1.539·10⁸ ±48.64 keV/c²	1972
¹⁵⁵Tb	5.32 ±6 d	syn.	3/2+	5.039 ±0.15 fm	1.549·10⁸ ±10.55 keV/c²	1957
¹⁵⁶Tb	5.35 ±10 d	syn.	3-	—	1.559·10⁸ ±4.044 keV/c²	1950
¹⁵⁷Tb	71 ±7 a	syn.	3/2+	5.048 ±0.15 fm	1.569·10⁸ ±1.092 keV/c²	1960
¹⁵⁸Tb	180 ±11 a	syn.	3-	—	1.579·10⁸ ±1.36 keV/c²	1957
¹⁵⁹Tb	stab.	100 %	3/2+	5.06 ±0.15 fm	1.589·10⁸ ±1.184 keV/c²	1933
¹⁶⁰Tb	72.3 ±2 d	syn.	3-	—	1.599·10⁸ ±1.191 keV/c²	1943
¹⁶¹Tb	6.89 ±2 d	syn.	3/2+	—	1.609·10⁸ ±1.308 keV/c²	1949
¹⁶²Tb	7.6 ±15 m	syn.	1-	—	1.619·10⁸ ±2.2 keV/c²	1965
¹⁶³Tb	19.5 ±3 m	syn.	3/2+	—	1.629·10⁸ ±4.358 keV/c²	1966
¹⁶⁴Tb	3 ±1 m	syn.	(5+)	—	1.639·10⁸ ±2 keV/c²	1968
¹⁶⁵Tb	2.11 ±10 m	syn.	(3/2+)	—	1.649·10⁸ ±1.654 keV/c²	1983
¹⁶⁶Tb	25.1 ±21 s	syn.	(2-)	—	1.659·10⁸ ±1.57 keV/c²	1996
¹⁶⁷Tb	19.4 ±27 s	syn.	(3/2+)	—	1.669·10⁸ ±2.071 keV/c²	1999
¹⁶⁸Tb	8.2 ±13 s	syn.	(4-)	—	1.679·10⁸ ±4.5 keV/c²	1999
¹⁶⁹Tb	5.1 ±3 s	syn.	(3/2+)	—	1.689·10⁸ ±322 keV/c²	2012
¹⁷⁰Tb	0.96 ±8 s	syn.	—	—	1.699·10⁸ ±322 keV/c²	2012
¹⁷¹Tb	1.24 ± s	syn.	—	—	1.709·10⁸ ±429 keV/c²	2012
¹⁷²Tb	0.76 ±19 s	syn.	(6+)	—	1.719·10⁸ ±537 keV/c²	2012
¹⁷³Tb	stab.	syn.	—	—	1.729·10⁸ ±537 keV/c²	2018
¹⁷⁴Tb	stab.	syn.	—	—	1.739·10⁸ ±537 keV/c²	2018

135TbTerbium-135

Classification	z: 65; n: 70; m: 135
Half life	0.94 ± ms
Natural abundance	synthetic nuclide
Spin/parity	(7/2-)
Decay modes	proton emission; electron capture + β⁺ decay
Discovery	2004
Mass excess	-33,060 ±400 keV
Binding energy	7,939 ±3 keV
Single-particle energy	-1,188 ±7 keV
Q value for electron capture	11,190 ±565.6 keV

Point at nuclide Decay chain of Terbium-135

138TbTerbium-138

Classification	z: 65; n: 73; m: 138
Half life	200 ns
Natural abundance	synthetic nuclide
Decay modes	electron capture + β⁺ decay
Discovery	1993
Mass excess	-43,600 ±300 keV
Binding energy	8,019 ±2 keV
Single-particle energy	-324 ±423 keV
Neutron separation energy	10,700 ±500 keV
Q value for electron capture	12,060 ±360.5 keV
β⁻ decay energy	-8,669 ±586 keV

Point at nuclide Decay chain of Terbium-138

139TbTerbium-139

Classification	z: 65; n: 74; m: 139
Half life	1.6 ±2 s
Natural abundance	synthetic nuclide
Decay modes	electron capture + β⁺ decay; electron capture + proton emission; proton emission
Discovery	1999
Mass excess	-48,130 ±298 keV
Binding energy	8,052 ±2 keV
Single-particle energy	-240 ±359 keV
Neutron separation energy	12,600 ±423 keV
Q value for electron capture	9,502 ±356.6 keV
β⁻ decay energy	-10,430 ±582 keV
β⁻ decay energy with neutron	-21,280 ±585 keV

Point at nuclide Decay chain of Terbium-139

140TbTerbium-140

Classification	z: 65; n: 75; m: 140
Half life	2.29 ±15 s
Natural abundance	synthetic nuclide
Spin/parity	(7+)
Decay modes	electron capture + β⁺ decay; electron capture + proton emission
Discovery	1986
Mass excess	-50,490 ±800.4 keV
Binding energy	8,068 ±5.717 keV
Single-particle energy	140 ±824 keV
Neutron separation energy	10,420 ±854 keV
Q value for electron capture	11,300 ±800.9 keV
β⁻ decay energy	-7,652 ±895 keV
β⁻ decay energy with neutron	-20,860 ±944 keV

Point at nuclide Decay chain of Terbium-140

141TbTerbium-141

Classification	z: 65; n: 76; m: 141
Half life	3.5 ±2 s
Natural abundance	synthetic nuclide
Spin/parity	(5/2-)
Decay modes	electron capture + β⁺ decay
Discovery	1986
Mass excess	-54,550 ±105.2 keV
Binding energy	8,097 ±0.7465 keV
Single-particle energy	47.53 ±108.9 keV
Neutron separation energy	12,120 ±807.3 keV
Q value for electron capture	8,683 ±107 keV
β⁻ decay energy	-9,158 ±316 keV
β⁻ decay energy with neutron	-19,790 ±414 keV

Point at nuclide Decay chain of Terbium-141

142TbTerbium-142

Classification	z: 65; n: 77; m: 142
Half life	597 ±17 ms
Natural abundance	synthetic nuclide
Spin/parity	1+
Decay modes	electron capture + β⁺ decay; β⁺ decay + proton emission
Discovery	1991
Mass excess	-56,560 ±700.5 keV
Binding energy	8,111 ±4.933 keV
Single-particle energy	624.2 ±700.8 keV
Neutron separation energy	10,080 ±708.4 keV
Q value for electron capture	10,400 ±701.1 keV
β⁻ decay energy	-6,440 ±200 keV
β⁻ decay energy with neutron	-19,250 ±761 keV

Point at nuclide Decay chain of Terbium-142

143TbTerbium-143

Classification	z: 65; n: 78; m: 143
Half life	12 ±1 s
Natural abundance	synthetic nuclide
Spin/parity	(11/2-)
Decay modes	electron capture + β⁺ decay
Discovery	1985
Mass excess	-60,420 ±51.23 keV
Binding energy	8,138 ±0.3583 keV
Single-particle energy	748.6 ±58.35 keV
Neutron separation energy	11,930 ±702.4 keV
Q value for electron capture	7,812 ±206.7 keV
β⁻ decay energy	-8,251 ±52.86 keV
β⁻ decay energy with neutron	-18,380 ±730 keV

Point at nuclide Decay chain of Terbium-143

144TbTerbium-144

Classification	z: 65; n: 79; m: 144
Half life	1 s
Natural abundance	synthetic nuclide
Spin/parity	1+
Decay modes	electron capture + β⁺ decay
Discovery	1982
Mass excess	-62,370 ±27.94 keV
Binding energy	8,151 ±0.1941 keV
Single-particle energy	1,425 ±202.2 keV
Neutron separation energy	10,020 ±58.35 keV
Q value for electron capture	9,391 ±39.52 keV
β⁻ decay energy	-5,799 ±28.85 keV
β⁻ decay energy with neutron	-18,280 ±30.83 keV

Point at nuclide Decay chain of Terbium-144

145TbTerbium-145

Classification	z: 65; n: 80; m: 145
Half life	stable nuclide
Natural abundance	synthetic nuclide
Spin/parity	(3/2+)
Discovery	1981
Mass excess	-66,400 ±110.8 keV
Binding energy	8,178 ±0.7648 keV
Single-particle energy	1,929 ±114.3 keV
Neutron separation energy	12,100 ±114.3 keV
Q value for electron capture	6,526 ±112.6 keV
β⁻ decay energy	-8,158 ±111 keV
β⁻ decay energy with neutron	-17,910 ±111.1 keV

Point at nuclide

146TbTerbium-146

Classification	z: 65; n: 81; m: 146
Half life	8 ±4 s
Natural abundance	synthetic nuclide
Spin/parity	1+
Decay modes	electron capture + β⁺ decay
Discovery	1974
Mass excess	-67,770 ±44.86 keV
Binding energy	8,187 ±0.3073 keV
Single-particle energy	2,125 ±49 keV
Neutron separation energy	9,435 ±119.6 keV
Q value for electron capture	8,322 ±45.04 keV
β⁻ decay energy	-5,209 ±45.15 keV
β⁻ decay energy with neutron	-17,600 ±45.33 keV

Point at nuclide Decay chain of Terbium-146

147TbTerbium-147

Classification	z: 65; n: 82; m: 147
Half life	1.64 ±3 h
Natural abundance	synthetic nuclide
Spin/parity	(1/2+)
Decay modes	electron capture + β⁺ decay
Discovery	1969
Mass excess	-70,750 ±8.096 keV
Binding energy	8,206 ±0.0551 keV
Single-particle energy	1,945 ±8.627 keV
Neutron separation energy	11,050 ±45.51 keV
Q value for electron capture	4,614 ±8.313 keV
β⁻ decay energy	-6,547 ±11.99 keV
β⁻ decay energy with neutron	-16,260 ±10.5 keV
Magnetic dipole moment	1.71 ±0.05 μN

Point at nuclide Decay chain of Terbium-147

148TbTerbium-148

Classification	z: 65; n: 83; m: 148
Half life	60 ±1 m
Natural abundance	synthetic nuclide
Spin/parity	2-
Decay modes	electron capture + β⁺ decay
Discovery	1960
Mass excess	-70,540 ±12.46 keV
Binding energy	8,204 ±0.0842 keV
Single-particle energy	2,468 ±12.57 keV
Neutron separation energy	7,865 ±14.85 keV
Q value for electron capture	5,732 ±12.54 keV
β⁻ decay energy	-2,678 ±9.596 keV
β⁻ decay energy with neutron	-14,420 ±15.28 keV
Magnetic dipole moment	-1.76 ±0.02 μN
Electric quadrupole moment	-0.3 ±0.2 b

Point at nuclide Decay chain of Terbium-148

149TbTerbium-149

Classification	z: 65; n: 84; m: 149
Half life	4.12 ±3 h
Natural abundance	synthetic nuclide
Spin/parity	1/2+
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1950
Mass excess	-71,490 ±3.629 keV
Binding energy	8,209 ±0.0244 keV
Single-particle energy	2,508 ±3.345 keV
Neutron separation energy	9,023 ±12.92 keV
Q value for electron capture	3,638 ±4.912 keV
β⁻ decay energy	-3,795 ±9.133 keV
β⁻ decay energy with neutron	-11,710 ±9.374 keV
Magnetic dipole moment	1.36 ±0.02 μN

Point at nuclide Decay chain of Terbium-149

150TbTerbium-150

Classification	z: 65; n: 85; m: 150
Half life	3.48 ±16 h
Natural abundance	synthetic nuclide
Spin/parity	(2)-
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1959
Mass excess	-71,110 ±7.371 keV
Binding energy	8,206 ±0.0491 keV
Single-particle energy	3,267 ±7.937 keV
Neutron separation energy	7,688 ±8.048 keV
Q value for electron capture	4,658 ±9.539 keV
β⁻ decay energy	-1,797 ±8.388 keV
β⁻ decay energy with neutron	-11,490 ±11.67 keV
Magnetic dipole moment	-0.9 ±0.02 μN

Point at nuclide Decay chain of Terbium-150

151TbTerbium-151

Classification	z: 65; n: 86; m: 151
Half life	17.6 ±14 h
Natural abundance	synthetic nuclide
Spin/parity	1/2(+)
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1953
Mass excess	-71,630 ±4.094 keV
Binding energy	8,208 ±0.0271 keV
Single-particle energy	3,148 ±7.169 keV
Neutron separation energy	8,589 ±8.314 keV
Q value for electron capture	2,565 ±5.071 keV
β⁻ decay energy	-2,872 ±4.945 keV
β⁻ decay energy with neutron	-10,390 ±5.75 keV
Magnetic dipole moment	0.926 ±0.006 μN

Point at nuclide Decay chain of Terbium-151

152TbTerbium-152

Classification	z: 65; n: 87; m: 152
Half life	17.5 ±1 h
Natural abundance	synthetic nuclide
Spin/parity	2-
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1959
Mass excess	-70,720 ±40.01 keV
Binding energy	8,202 ±0.2632 keV
Single-particle energy	3,817 ±40.1 keV
Neutron separation energy	7,165 ±40.2 keV
Q value for electron capture	3,990 ±40 keV
β⁻ decay energy	-599.4 ±40.25 keV
β⁻ decay energy with neutron	-10,040 ±40.12 keV
Magnetic dipole moment	-0.58 ±0.02 μN
Electric quadrupole moment	0.34 ±0.13 b

Point at nuclide Decay chain of Terbium-152

153TbTerbium-153

Classification	z: 65; n: 88; m: 153
Half life	2.34 ±1 d
Natural abundance	synthetic nuclide
Spin/parity	5/2+
Decay modes	electron capture + β⁺ decay
Discovery	1957
Mass excess	-71,320 ±3.947 keV
Binding energy	8,205 ±0.0258 keV
Single-particle energy	3,895 ±3.845 keV
Neutron separation energy	8,667 ±40.18 keV
Q value for electron capture	1,569 ±4.072 keV
β⁻ decay energy	-2,171 ±1.933 keV
β⁻ decay energy with neutron	-9,267 ±5.855 keV
Magnetic dipole moment	3.47 ±0.02 μN
Electric quadrupole moment	1.08 ±0.14 b

Point at nuclide Decay chain of Terbium-153

154TbTerbium-154

Classification	z: 65; n: 89; m: 154
Half life	21.5 ±4 h
Natural abundance	synthetic nuclide
Spin/parity	0
Decay modes	electron capture + β⁺ decay; β⁻ decay
Discovery	1972
Mass excess	-70,160 ±45.3 keV
Binding energy	8,196 ±0.2942 keV
Single-particle energy	4,562 ±45.29 keV
Neutron separation energy	6,914 ±45.46 keV
Q value for electron capture	3,549 ±45.32 keV
β⁻ decay energy	237.3 ±45.9 keV
β⁻ decay energy with neutron	-9,085 ±45.46 keV
Magnetic dipole moment	1.6 ±0.2 μN

Point at nuclide Decay chain of Terbium-154

155TbTerbium-155

Classification	z: 65; n: 90; m: 155
Half life	5.32 ±6 d
Natural abundance	synthetic nuclide
Spin/parity	3/2+
Decay modes	electron capture (EC)
Discovery	1957
Mass excess	-71,260 ±9.83 keV
Binding energy	8,202 ±0.0634 keV
Single-particle energy	4,833 ±9.79 keV
Neutron separation energy	9,165 ±46.34 keV
Q value for electron capture	819.8 ±9.879 keV
β⁻ decay energy	-2,095 ±1.897 keV
β⁻ decay energy with neutron	-8,928 ±12.27 keV
Magnetic dipole moment	2.03 ±0.02 μN
Electric quadrupole moment	1.41 ±0.06 b

Point at nuclide Decay chain of Terbium-155

156TbTerbium-156

Classification	z: 65; n: 91; m: 156
Half life	5.35 ±10 d
Natural abundance	synthetic nuclide
Spin/parity	3-
Decay modes	electron capture + β⁺ decay
Discovery	1950
Mass excess	-70,100 ±3.768 keV
Binding energy	8,194 ±0.0242 keV
Single-particle energy	5,309 ±3.676 keV
Neutron separation energy	6,911 ±10.45 keV
Q value for electron capture	2,444 ±3.894 keV
β⁻ decay energy	438.3 ±3.678 keV
β⁻ decay energy with neutron	-9,007 ±10.28 keV
Magnetic dipole moment	1.7 ±0.2 μN
Electric quadrupole moment	2.3 ±0.8 b

Point at nuclide Decay chain of Terbium-156

157TbTerbium-157

Classification	z: 65; n: 92; m: 157
Half life	71 ±7 a
Natural abundance	synthetic nuclide
Spin/parity	3/2+
Decay modes	electron capture (EC)
Discovery	1960
Mass excess	-70,770 ±1.018 keV
Binding energy	8,198 ±0.0065 keV
Single-particle energy	5,517 ±0.3309 keV
Neutron separation energy	8,744 ±3.689 keV
Q value for electron capture	60.04 ±1.411 keV
β⁻ decay energy	-1,340 ±5.129 keV
β⁻ decay energy with neutron	-8,306 ±0.3464 keV
Magnetic dipole moment	2.03 ±0.02 μN
Electric quadrupole moment	1.4 ±0.08 b

Point at nuclide Decay chain of Terbium-157

158TbTerbium-158

Classification	z: 65; n: 93; m: 158
Half life	180 ±11 a
Natural abundance	synthetic nuclide
Spin/parity	3-
Decay modes	electron capture + β⁺ decay; β⁻ decay
Discovery	1957
Mass excess	-69,480 ±1.268 keV
Binding energy	8,189 ±0.008 keV
Single-particle energy	5,935 ±0.9778 keV
Neutron separation energy	6,778 ±1.009 keV
Q value for electron capture	1,219 ±1.6 keV
β⁻ decay energy	936.2 ±2.475 keV
β⁻ decay energy with neutron	-8,118 ±5.187 keV
Magnetic dipole moment	1.753 ±0.007 μN
Electric quadrupole moment	2.7 ±0.5 b

Point at nuclide Decay chain of Terbium-158

159TbTerbium-159

Classification	z: 65; n: 94; m: 159
Half life	stable nuclide
Natural abundance	100 %
Spin/parity	3/2+
Discovery	1933
Mass excess	-69,540 ±1.103 keV
Binding energy	8,188 ±0.0069 keV
Single-particle energy	6,131 ±0.7471 keV
Neutron separation energy	8,133 ±0.6383 keV
Q value for electron capture	-970.8 ±1.475 keV
β⁻ decay energy	-365.4 ±1.157 keV
β⁻ decay energy with neutron	-7,197 ±2.418 keV
Magnetic dipole moment	2.009 ±0.004 μN
Electric quadrupole moment	1.432 ±0.008 b

Point at nuclide

160TbTerbium-160

Classification	z: 65; n: 95; m: 160
Half life	72.3 ±2 d
Natural abundance	synthetic nuclide
Spin/parity	3-
Decay modes	β⁻ decay
Discovery	1943
Mass excess	-67,840 ±1.11 keV
Binding energy	8,177 ±0.0069 keV
Single-particle energy	6,563 ±0.7618 keV
Neutron separation energy	6,375 ±0.1336 keV
Q value for electron capture	105.5 ±1.579 keV
β⁻ decay energy	1,835 ±1.101 keV
β⁻ decay energy with neutron	-6,741 ±1.164 keV
Magnetic dipole moment	1.698 ±0.008 μN
Electric quadrupole moment	3.85 ±0.05 b

Point at nuclide Decay chain of Terbium-160

161TbTerbium-161

Classification	z: 65; n: 96; m: 161
Half life	6.89 ±2 d
Natural abundance	synthetic nuclide
Spin/parity	3/2+
Decay modes	β⁻ decay
Discovery	1949
Mass excess	-67,470 ±1.218 keV
Binding energy	8,174 ±0.0076 keV
Single-particle energy	6,808 ±1.036 keV
Neutron separation energy	7,696 ±0.5498 keV
Q value for electron capture	-1,956 ±1.935 keV
β⁻ decay energy	593.7 ±1.201 keV
β⁻ decay energy with neutron	-5,861 ±1.202 keV
Magnetic dipole moment	2.2 ±0.1 μN
Electric quadrupole moment	1.3 ±0.6 b

Point at nuclide Decay chain of Terbium-161

162TbTerbium-162

Classification	z: 65; n: 97; m: 162
Half life	7.6 ±15 m
Natural abundance	synthetic nuclide
Spin/parity	1-
Decay modes	β⁻ decay
Discovery	1965
Mass excess	-65,880 ±2.049 keV
Binding energy	8,164 ±0.0127 keV
Single-particle energy	7,662 ±2.542 keV
Neutron separation energy	6,489 ±2.384 keV
Q value for electron capture	-1,599 ±4.461 keV
β⁻ decay energy	2,301 ±2.164 keV
β⁻ decay energy with neutron	-5,896 ±2.164 keV

Point at nuclide Decay chain of Terbium-162

163TbTerbium-163

Classification	z: 65; n: 98; m: 163
Half life	19.5 ±3 m
Natural abundance	synthetic nuclide
Spin/parity	3/2+
Decay modes	β⁻ decay
Discovery	1966
Mass excess	-64,600 ±4.06 keV
Binding energy	8,155 ±0.0249 keV
Single-particle energy	7,604 ±5.626 keV
Neutron separation energy	6,787 ±4.547 keV
Q value for electron capture	-3,208 ±4.137 keV
β⁻ decay energy	1,785 ±4 keV
β⁻ decay energy with neutron	-4,486 ±4 keV

Point at nuclide Decay chain of Terbium-163

164TbTerbium-164

Classification	z: 65; n: 99; m: 164
Half life	3 ±1 m
Natural abundance	synthetic nuclide
Spin/parity	(5+)
Decay modes	β⁻ decay
Discovery	1968
Mass excess	-62,110 ±1.863 keV
Binding energy	8,139 ±0.0114 keV
Single-particle energy	8,005 ±2.026 keV
Neutron separation energy	5,580 ±4.467 keV
Q value for electron capture	-2,412 ±2.114 keV
β⁻ decay energy	3,862 ±1.988 keV
β⁻ decay energy with neutron	-3,796 ±1.987 keV

Point at nuclide Decay chain of Terbium-164

165TbTerbium-165

Classification	z: 65; n: 100; m: 165
Half life	2.11 ±10 m
Natural abundance	synthetic nuclide
Spin/parity	(3/2+)
Decay modes	β⁻ decay
Discovery	1983
Mass excess	-60,590 ±1.541 keV
Binding energy	8,130 ±0.0093 keV
Single-particle energy	8,184 ±1.837 keV
Neutron separation energy	6,555 ±2.417 keV
Q value for electron capture	-4,064 ±2.019 keV
β⁻ decay energy	3,023 ±1.691 keV
β⁻ decay energy with neutron	-2,693 ±1.69 keV

Point at nuclide Decay chain of Terbium-165

166TbTerbium-166

Classification	z: 65; n: 101; m: 166
Half life	25.1 ±21 s
Natural abundance	synthetic nuclide
Spin/parity	(2-)
Decay modes	β⁻ decay
Discovery	1996
Mass excess	-57,810 ±1.463 keV
Binding energy	8,113 ±0.0088 keV
Single-particle energy	8,571 ±1.959 keV
Neutron separation energy	5,291 ±2.124 keV
Q value for electron capture	-3,438 ±2.156 keV
β⁻ decay energy	4,775 ±1.669 keV
β⁻ decay energy with neutron	-2,268 ±1.62 keV

Point at nuclide Decay chain of Terbium-166

167TbTerbium-167

Classification	z: 65; n: 102; m: 167
Half life	19.4 ±27 s
Natural abundance	synthetic nuclide
Spin/parity	(3/2+)
Decay modes	β⁻ decay
Discovery	1999
Mass excess	-55,890 ±1.929 keV
Binding energy	8,101 ±0.0116 keV
Single-particle energy	8,801 ±2.496 keV
Neutron separation energy	6,145 ±2.421 keV
Q value for electron capture	-5,108 ±5.55 keV
β⁻ decay energy	4,028 ±4.445 keV
β⁻ decay energy with neutron	-1,370 ±2.09 keV

Point at nuclide Decay chain of Terbium-167

168TbTerbium-168

Classification	z: 65; n: 103; m: 168
Half life	8.2 ±13 s
Natural abundance	synthetic nuclide
Spin/parity	(4-)
Decay modes	β⁻ decay
Discovery	1999
Mass excess	-52,790 ±4.192 keV
Binding energy	8,082 ±0.025 keV
Single-particle energy	9,294 ±6.689 keV
Neutron separation energy	4,969 ±4.614 keV
Q value for electron capture	-4,632 ±300 keV
β⁻ decay energy	5,777 ±140 keV
β⁻ decay energy with neutron	-941.1 ±5.797 keV

Point at nuclide Decay chain of Terbium-168

169TbTerbium-169

Classification	z: 65; n: 104; m: 169
Half life	5.1 ±3 s
Natural abundance	synthetic nuclide
Spin/parity	(3/2+)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2012
Mass excess	-50,480 ±300 keV
Binding energy	8,069 ±2 keV
Single-particle energy	9,620 ±424 keV
Neutron separation energy	5,771 ±300 keV
Q value for electron capture	-6,590 ±500 keV
β⁻ decay energy	5,116 ±425 keV
β⁻ decay energy with neutron	7 ±331 keV

Point at nuclide Decay chain of Terbium-169

170TbTerbium-170

Classification	z: 65; n: 105; m: 170
Half life	0.96 ±8 s
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2012
Mass excess	-46,710 ±300 keV
Binding energy	8,047 ±2 keV
Single-particle energy	10,100 ±500 keV
Neutron separation energy	4,301 ±424 keV
Q value for electron capture	-5,860 ±583 keV
β⁻ decay energy	7,000 ±361 keV
β⁻ decay energy with neutron	815 ±425 keV

Point at nuclide Decay chain of Terbium-170

171TbTerbium-171

Classification	z: 65; n: 106; m: 171
Half life	1.24 ± s
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2012
Mass excess	-43,770 ±400 keV
Binding energy	8,030 ±2 keV
Single-particle energy	10,200 ±640 keV
Neutron separation energy	5,132 ±500 keV
Q value for electron capture	-7,560 ±640.3 keV
β⁻ decay energy	6,240 ±447 keV
β⁻ decay energy with neutron	1,869 ±447 keV

Point at nuclide Decay chain of Terbium-171

172TbTerbium-172

Classification	z: 65; n: 107; m: 172
Half life	0.76 ±19 s
Natural abundance	synthetic nuclide
Spin/parity	(6+)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2012
Mass excess	-39,690 ±500 keV
Binding energy	8,006 ±3 keV
Single-particle energy	10,760 ±707 keV
Neutron separation energy	3,991 ±640 keV
Q value for electron capture	-6,720 ±583 keV
β⁻ decay energy	8,070 ±583 keV
β⁻ decay energy with neutron	2,249 ±539 keV

Point at nuclide Decay chain of Terbium-172

173TbTerbium-173

Classification	z: 65; n: 108; m: 173
Half life	stable nuclide
Natural abundance	synthetic nuclide
Discovery	2018
Mass excess	-36,510 ±500 keV
Binding energy	7,988 ±3 keV
Single-particle energy	10,820 ±583 keV
Neutron separation energy	4,891 ±707 keV
β⁻ decay energy	7,230 ±640 keV
β⁻ decay energy with neutron	3,178 ±583 keV

Point at nuclide

174TbTerbium-174

Classification	z: 65; n: 109; m: 174
Half life	stable nuclide
Natural abundance	synthetic nuclide
Discovery	2018
Mass excess	-31,970 ±500 keV
Binding energy	7,963 ±3 keV
Neutron separation energy	3,531 ±707 keV
β⁻ decay energy	9,160 ±707 keV
β⁻ decay energy with neutron	3,699 ±640 keV

Point at nuclide

Isotopes of Terbium

135TbTerbium-135ads_clickcall_splitdownload

138TbTerbium-138ads_clickcall_splitdownload

139TbTerbium-139ads_clickcall_splitdownload

140TbTerbium-140ads_clickcall_splitdownload

141TbTerbium-141ads_clickcall_splitdownload

142TbTerbium-142ads_clickcall_splitdownload

143TbTerbium-143ads_clickcall_splitdownload

144TbTerbium-144ads_clickcall_splitdownload

145TbTerbium-145ads_clickdownload

146TbTerbium-146ads_clickcall_splitdownload

147TbTerbium-147ads_clickcall_splitdownload

148TbTerbium-148ads_clickcall_splitdownload

149TbTerbium-149ads_clickcall_splitdownload

150TbTerbium-150ads_clickcall_splitdownload

151TbTerbium-151ads_clickcall_splitdownload

152TbTerbium-152ads_clickcall_splitdownload

153TbTerbium-153ads_clickcall_splitdownload

154TbTerbium-154ads_clickcall_splitdownload

155TbTerbium-155ads_clickcall_splitdownload

156TbTerbium-156ads_clickcall_splitdownload

157TbTerbium-157ads_clickcall_splitdownload

158TbTerbium-158ads_clickcall_splitdownload

159TbTerbium-159ads_clickdownload

160TbTerbium-160ads_clickcall_splitdownload

161TbTerbium-161ads_clickcall_splitdownload

162TbTerbium-162ads_clickcall_splitdownload

163TbTerbium-163ads_clickcall_splitdownload

164TbTerbium-164ads_clickcall_splitdownload

165TbTerbium-165ads_clickcall_splitdownload

166TbTerbium-166ads_clickcall_splitdownload

167TbTerbium-167ads_clickcall_splitdownload

168TbTerbium-168ads_clickcall_splitdownload

169TbTerbium-169ads_clickcall_splitdownload

170TbTerbium-170ads_clickcall_splitdownload

171TbTerbium-171ads_clickcall_splitdownload

172TbTerbium-172ads_clickcall_splitdownload

173TbTerbium-173ads_clickdownload

174TbTerbium-174ads_clickdownload

135TbTerbium-135

138TbTerbium-138

139TbTerbium-139

140TbTerbium-140

141TbTerbium-141

142TbTerbium-142

143TbTerbium-143

144TbTerbium-144

145TbTerbium-145

146TbTerbium-146

147TbTerbium-147

148TbTerbium-148

149TbTerbium-149

150TbTerbium-150

151TbTerbium-151

152TbTerbium-152

153TbTerbium-153

154TbTerbium-154

155TbTerbium-155

156TbTerbium-156

157TbTerbium-157

158TbTerbium-158

159TbTerbium-159

160TbTerbium-160

161TbTerbium-161

162TbTerbium-162

163TbTerbium-163

164TbTerbium-164

165TbTerbium-165

166TbTerbium-166

167TbTerbium-167

168TbTerbium-168

169TbTerbium-169

170TbTerbium-170

171TbTerbium-171

172TbTerbium-172

173TbTerbium-173

174TbTerbium-174