ADOPTED LEVELS, GAMMAS for 73Ga
Authors: Balraj Singh and Jun Chen | Citation: Nucl. Data Sheets 158, 1 (2019) | Cutoff date: 16-May-2019
Full ENSDF file | Adopted Levels (PDF version)
Q(β-)=1598.2 keV 17 | S(n)= 9182.4 keV 19 | S(p)= 8843 keV 3 | Q(α)= -6388.0 keV 22 | ||
Reference: 2017WA10 |
References: | |||
A | 73Zn β- decay (24.5 S) | B | 70Zn(α,p) |
C | 71Ga(t,p) | D | 74Ge(d,3He),(pol d,3He) |
E | 238U(76Ge,xγ) | F | Coulomb Excitation |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
0.0 | A EF | 1/2- | 4.86 h 3 % β- = 100 | ||||
<0.3 | ABCDEF | 3/2- | < 200 ms % IT = ? % β- = ? | ||||
198.95 20 | AB DEF | 5/2- | 198.8 3 | 100 | 0.3 | 3/2- | |
217.84 10 | ABCDEF | 3/2- | 47 ps 6 | 218.0 2 | 100 | 0.0 | 1/2- |
496.10 18 | ABCDEF | 5/2-,7/2- | 22 ps 6 | 278.2 3 297.3 2 495.9 2 | 6.8 8 0.8 4 100 7 | 217.84 198.95 0.3 | 3/2- 5/2- 3/2- |
651.16 20 | DEF | (7/2-) | 155.0 5 433.0 5 452.1 2 651.2 2 | 9 1 12 1 100 4 57.8 5 | 496.10 217.84 198.95 0.3 | 5/2-,7/2- 3/2- 5/2- 3/2- | |
911.14 18 | ABCD | 3/2- | ≤ 28 ps | 415.2 2 693.4 1 910.8 3 | 6.3 9 22 2 100 4 | 496.10 217.84 | 5/2-,7/2- 3/2- |
952.30 19 | BCDE | 7/2- | 456.2 2 734.2 2 753.3 2 952.4 2 | 23.7 6 11.6 4 100 2 79.7 8 | 496.10 217.84 198.95 0.3 | 5/2-,7/2- 3/2- 5/2- 3/2- | |
1113.7 3 | ABCD | 1/2- | 1113.5 3 | 100 | | | |
1232.03 23 | BCDE | 9/2+ | 279.7 2 580.9 2 | 100 72.4 5 | 952.30 651.16 | 7/2- (7/2-) | |
1393.17 21 | A C F | (5/2-) | 482.2 2 1194.2 4 1392.9 3 | 11 11 22 11 100 11 | 911.14 198.95 | 3/2- 5/2- | |
1397.5 3 | C E | (9/2-) | 901.4 2 | 100 | 496.10 | 5/2-,7/2- | |
1529 3 | BCD | 5/2-,7/2- | |||||
1578 3 | BC | (5/2-) | |||||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
1596.4 3 | E | (11/2-) | 945.2 2 | 100 | 651.16 | (7/2-) | |
1618 3 | BCD | 5/2-,7/2- | |||||
1692.93 20 | A | (1/2-,3/2-) | 579.3 3 ? 781.7 2 1196.9 3 1475.1 3 1493.5 6 ? 1692.8 2 | 2 2 19 2 100 15 48 4 2 2 50 8 | 1113.7 911.14 496.10 217.84 198.95 | 1/2- 3/2- 5/2-,7/2- 3/2- 5/2- | |
1700 3 | C | (1/2:7/2)- | |||||
1721.60 22 | A D | (1/2-,3/2-) | 608.4 5 ? 810.5 4 1504.0 3 1721.3 2 | 3 3 9 3 19 3 100 9 | 1113.7 911.14 217.84 | 1/2- 3/2- 3/2- | |
1772 3 | CD | (5/2,7/2)- | |||||
1800 3 | BC | (3/2-) | |||||
1813.4 3 | E | (13/2+) | 581.4 2 | 100 | 1232.03 | 9/2+ | |
1924.70 21 | ABCD | 1/2-,3/2- | 1013.4 4 1428.6 2 1707.0 4 1726.0 4 ? 1924.5 2 | 3 1 25 8 3 1 1 1 100 8 | 911.14 496.10 217.84 198.95 | 3/2- 5/2-,7/2- 3/2- 5/2- | |
1952 3 | C | (1/2:7/2)- | |||||
1980.09 21 | A | (1/2-,3/2-) | 586.6 5 ? 1069.7 3 1483.9 3 1761.6 5 1979.7 2 | 2 2 3 2 29 3 10 3 100 8 | 1393.17 911.14 496.10 217.84 | (5/2-) 3/2- 5/2-,7/2- 3/2- | |
2001 3 | C | (1/2:7/2)- | |||||
2067 3 | C | (3/2:9/2)+ | |||||
2067 | D | 7/2- | |||||
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
2109.17 20 | A C | 3/2- | 716.1 2 1197.7 4 1613.1 2 1891.3 5 2108.9 2 | 5.1 6 82 6 100 6 5.1 6 69 8 | 1393.17 911.14 496.10 217.84 | (5/2-) 3/2- 5/2-,7/2- 3/2- | |
2160 3 | C | (1/2:7/2)- | |||||
2221 3 | C | (1/2:7/2)- | |||||
2246.3 3 | A D | (1/2-,3/2-) | 2028.3 5 2246.1 3 | 36 9 100 20 | 217.84 | 3/2- | |
2277 3 | C | (5/2:11/2)- | |||||
2380 3 | C | (5/2:11/2)- | |||||
2380 | D | 1/2- | |||||
2411 3 | C | (1/2:7/2)(-) | |||||
2466.6 3 | A CD | (3/2+) | 1970.5 7 2248.6 5 2466.4 3 | 70 30 100 30 70 30 | 496.10 217.84 | 5/2-,7/2- 3/2- | |
2498 3 | C | (3/2:9/2)+ | |||||
2527.9 4 | E | (13/2-) | 1130.4 2 | 100 | 1397.5 | (9/2-) | |
2582 6 | C | (1/2:7/2)- | |||||
2718.2 4 | E | (17/2+) | 904.8 2 | 100 | 1813.4 | (13/2+) | |
2726 6 | C | (5/2-,7/2-) | |||||
2761.2 4 | E | (15/2-) | 1164.8 2 | 100 | 1596.4 | (11/2-) | |
2770.49 23 | A | (1/2-,3/2-) | 1859.5 3 2274.3 3 2571.2 7 2770.2 3 | 21 7 79 7 7 7 100 20 | 911.14 496.10 198.95 | 3/2- 5/2-,7/2- 5/2- | |
2814.4 6 | A | 2616.1 5 ? 2814.2 5 | 50 50 100 50 | 198.95 | 5/2- | ||
2986.9 3 | A | (1/2,3/2)- | 1593.7 5 1873.0 5 2769.3 5 ? 2787.9 4 2986.7 3 | 11 5 16 5 11 5 21 5 100 10 | 1393.17 1113.7 217.84 198.95 | (5/2-) 1/2- 3/2- 5/2- | |
E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | Final Levels | |
3099.1 5 | A | (1/2-,3/2-) | 2881.7 5 ? 2900.2 5 3098.8 6 | 50 50 100 50 100 50 | 217.84 198.95 | 3/2- 5/2- | |
3397.2 6 | E | (17/2-) | 869.4 5 | 100 | 2527.9 | (13/2-) | |
3828.3 6 | E | (19/2-) | 1067.3 5 | 100 | 2761.2 | (15/2-) | |
3973.3 4 | E | (21/2+) | 1255.2 2 | 100 | 2718.2 | (17/2+) | |
5292.5 7 | E | (25/2+) | 1319.2 5 | 100 | 3973.3 | (21/2+) |
E(level): From a least-squares fit to γ-ray energies for levels populated in γ-ray studies. Several g.s. transitions could decay to either the g.s. or the level at <0.3 keV. In the fitting procedure final level energy is assumed as 0.15 keV 15 to cover the range up to 0.3 keV
T1/2(level): From βγγ(t) in 73Zn β- decay (24.5 s) (2017Ve05) using the Advanced Time-Delayed method with an ultrafast plastic scintillator and LaBr3(Ce) detector, unless otherwise noted.
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | Final Levels | ||
Band 1 - γ cascade based on 5/2-,7/2 | |||||||
496.10 18 | 5/2-,7/2- | 22 ps 6 | |||||
1397.5 3 | (9/2-) | ||||||
2527.9 4 | (13/2-) | 1130.4 2 | 100 | 1397.5 | (9/2-) | ||
3397.2 6 | (17/2-) | 869.4 5 | 100 | 2527.9 | (13/2-) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | Final Levels | ||
Band 2 - γ cascade based on 9/2+ | |||||||
1232.03 23 | 9/2+ | ||||||
1813.4 3 | (13/2+) | ||||||
2718.2 4 | (17/2+) | 904.8 2 | 100 | 1813.4 | (13/2+) | ||
3973.3 4 | (21/2+) | 1255.2 2 | 100 | 2718.2 | (17/2+) | ||
5292.5 7 | (25/2+) | 1319.2 5 | 100 | 3973.3 | (21/2+) | ||
E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) | I(γ) | Final Levels | ||
Band 3 - γ cascade based on (7/2-) | |||||||
651.16 20 | (7/2-) | ||||||
1596.4 3 | (11/2-) | ||||||
2761.2 4 | (15/2-) | 1164.8 2 | 100 | 1596.4 | (11/2-) | ||
3828.3 6 | (19/2-) | 1067.3 5 | 100 | 2761.2 | (15/2-) |
Additional Level Data and Comments:
E(level) | Jπ(level) | T1/2(level) | Comments |
0.0 | 1/2- | 4.86 h 3 % β- = 100 | μ=+0.209 2 (2010Ch16,2014StZZ) Isotope shift δν(71Ga,73Ga)=+15.5 MHz 15(stat) 40(syst) (2012Pr11). E(level): Existence of a level near the g.s. is deduced from the observed Doppler-broadening of 199.2γ from the 199.2, 5/2- level in Coulomb excitation (2010Di14), which restricts the lifetime of the 5/2- level considerably smaller than 3.5 ns (maximum time-of-flight between target and detector) consistent with the lifetime=3.3 ps from Weisskopf estimate for a pure 199-keV M1 transition but not with 13 ns 2 from measured B(E2)(W.u.)=11 2 for the assumption of a pure E2 to 1/2- g.s. Energy of the closely-spaced level near the g.s. is estimated as <0.3 keV from 2017Ve05 in 73Zn β- decay based on a search for energy differences between γ cascades deexciting the same level but proceeding through distinct paths, and also based on a search for doublets in γ-ray spectra. The energy of this level is also estimated by 2010Di14 as 0.4 keV 4 using the approach based on energy differences between γ cascades. Final level is <0.3 keV, based on data in Coulomb excitation (2010Di14). In the least-squares fitting procedure, the final level is assumed at 0.15 keV 15. Based on general systematics of half-lives of ground states and low-lying isomers, longer half-life activity of 4.86H in 73Ga is associated with the ground state, 1/2-, although, an experimental evidence for an absolute positioning of the 1/2- and 3/2- states is lacking. |
0.3 | 3/2- | < 200 ms % IT = ? % β- = ? | E(level): Existence of a level near the g.s. is deduced from the observed Doppler-broadening of 199.2γ from the 199.2, 5/2- level in Coulomb excitation (2010Di14), which restricts the lifetime of the 5/2- level considerably smaller than 3.5 ns (maximum time-of-flight between target and detector) consistent with the lifetime=3.3 ps from Weisskopf estimate for a pure 199-keV M1 transition but not with 13 ns 2 from measured B(E2)(W.u.)=11 2 for the assumption of a pure E2 to 1/2- g.s. Energy of the closely-spaced level near the g.s. is estimated as <0.3 keV from 2017Ve05 in 73Zn β- decay based on a search for energy differences between γ cascades deexciting the same level but proceeding through distinct paths, and also based on a search for doublets in γ-ray spectra. The energy of this level is also estimated by 2010Di14 as 0.4 keV 4 using the approach based on energy differences between γ cascades. Final level is <0.3 keV, based on data in Coulomb excitation (2010Di14). In the least-squares fitting procedure, the final level is assumed at 0.15 keV 15. Based on general systematics of half-lives of ground states and low-lying isomers, longer half-life activity of 4.86H in 73Ga is associated with the ground state, 1/2-, although, an experimental evidence for an absolute positioning of the 1/2- and 3/2- states is lacking. |
651.16 | (7/2-) | XREF: d(?). Jπ(level): Proposed by 2009St12 in 238U(76Ge,Xγ) based on systematics of neighboring odd-A Ga isotopes and band structures. | |
1397.5 | (9/2-) | Jπ(level): Proposed by 2009St12 in 238U(76Ge,Xγ) based on systematics of neighboring odd-A Ga isotopes and band structures. | |
1529 | 5/2-,7/2- | Jπ(level): (7/2) preferred from weak σ(α,p) compared with strong σ(d,3He). | |
1596.4 | (11/2-) | Jπ(level): Proposed by 2009St12 in 238U(76Ge,Xγ) based on systematics of neighboring odd-A Ga isotopes and band structures. | |
1721.60 | (1/2-,3/2-) | XREF: d(?). | |
1800 | (3/2-) | XREF: B(1812). | |
1813.4 | (13/2+) | Jπ(level): Proposed by 2009St12 in 238U(76Ge,Xγ) based on systematics of neighboring odd-A Ga isotopes and band structures. | |
1924.70 | 1/2-,3/2- | XREF: B(1939). | |
2246.3 | (1/2-,3/2-) | XREF: d(?). | |
2527.9 | (13/2-) | Jπ(level): Proposed by 2009St12 in 238U(76Ge,Xγ) based on systematics of neighboring odd-A Ga isotopes and band structures. | |
2718.2 | (17/2+) | Jπ(level): Proposed by 2009St12 in 238U(76Ge,Xγ) based on systematics of neighboring odd-A Ga isotopes and band structures. | |
2761.2 | (15/2-) | Jπ(level): Proposed by 2009St12 in 238U(76Ge,Xγ) based on systematics of neighboring odd-A Ga isotopes and band structures. | |
3397.2 | (17/2-) | Jπ(level): Proposed by 2009St12 in 238U(76Ge,Xγ) based on systematics of neighboring odd-A Ga isotopes and band structures. | |
3828.3 | (19/2-) | Jπ(level): Proposed by 2009St12 in 238U(76Ge,Xγ) based on systematics of neighboring odd-A Ga isotopes and band structures. | |
3973.3 | (21/2+) | Jπ(level): Proposed by 2009St12 in 238U(76Ge,Xγ) based on systematics of neighboring odd-A Ga isotopes and band structures. | |
5292.5 | (25/2+) | Jπ(level): Proposed by 2009St12 in 238U(76Ge,Xγ) based on systematics of neighboring odd-A Ga isotopes and band structures. |
E(level) | E(gamma) | Comments |
198.95 | 198.8 | E(γ): weighted average of 198.4 2 from 73Zn β- decay (24.5 s), 199.1 2 from 238U(76Ge,Xγ), and 199.2 5 from Coulomb excitation.. Final level is <0.3 keV, based on data in Coulomb excitation (2010Di14). In the least-squares fitting procedure, the final level is assumed at 0.15 keV 15. Based on general systematics of half-lives of ground states and low-lying isomers, longer half-life activity of 4.86H in 73Ga is associated with the ground state, 1/2-, although, an experimental evidence for an absolute positioning of the 1/2- and 3/2- states is lacking. |
217.84 | 218.0 | E(γ): weighted average of 217.8 2 from 73Zn β- decay (24.5 s), 218.2 2 from 238U(76Ge,Xγ), and 218.4 6 from Coulomb excitation. The final level is g.s. based on data in Coulomb excitation |
496.10 | 278.2 | E(γ): weighted average of 278.1 3 from 73Zn β- decay (24.5 s) and 279.0 7 from Coulomb excitation | 297.3 | E(γ): other: 298 2 from Coulomb excitation (2010Di14) | 495.9 | E(γ): weighted average of 495.7 2 from 73Zn β- decay (24.5 s), 496.2 2 from 238U(76Ge,Xγ), and 495.8 5 from Coulomb excitation. Final level is <0.3 keV, based on data in Coulomb excitation (2010Di14). In the least-squares fitting procedure, the final level is assumed at 0.15 keV 15. Based on general systematics of half-lives of ground states and low-lying isomers, longer half-life activity of 4.86H in 73Ga is associated with the ground state, 1/2-, although, an experimental evidence for an absolute positioning of the 1/2- and 3/2- states is lacking. |
651.16 | 155.0 | E(γ): From 238U(76Ge,Xγ) (2009St12) I(γ): From 238U(76Ge,Xγ) (2009St12) | 433.0 | E(γ): other: 434.0 15 from Coulomb excitation (2010Di14). From 238U(76Ge,Xγ) (2009St12) I(γ): From 238U(76Ge,Xγ) (2009St12) | 452.1 | E(γ): other: 451.7 11 from Coulomb excitation (2010Di14). From 238U(76Ge,Xγ) (2009St12) I(γ): From 238U(76Ge,Xγ) (2009St12) | 651.2 | E(γ): other: 651 2 from Coulomb excitation (2010Di14). From 238U(76Ge,Xγ) (2009St12). Final level is <0.3 keV, based on data in Coulomb excitation (2010Di14). In the least-squares fitting procedure, the final level is assumed at 0.15 keV 15. Based on general systematics of half-lives of ground states and low-lying isomers, longer half-life activity of 4.86H in 73Ga is associated with the ground state, 1/2-, although, an experimental evidence for an absolute positioning of the 1/2- and 3/2- states is lacking. I(γ): From 238U(76Ge,Xγ) (2009St12) |
911.14 | 910.8 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
952.30 | 456.2 | E(γ): From 238U(76Ge,Xγ) (2009St12) I(γ): From 238U(76Ge,Xγ) (2009St12) | 734.2 | E(γ): From 238U(76Ge,Xγ) (2009St12) I(γ): From 238U(76Ge,Xγ) (2009St12) | 753.3 | E(γ): From 238U(76Ge,Xγ) (2009St12) I(γ): From 238U(76Ge,Xγ) (2009St12) | 952.4 | E(γ): From 238U(76Ge,Xγ) (2009St12) I(γ): From 238U(76Ge,Xγ) (2009St12) |
1113.7 | 1113.5 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
1232.03 | 279.7 | E(γ): From 238U(76Ge,Xγ) (2009St12) I(γ): From 238U(76Ge,Xγ) (2009St12) | 580.9 | E(γ): From 238U(76Ge,Xγ) (2009St12) I(γ): From 238U(76Ge,Xγ) (2009St12) |
1393.17 | 1392.9 | E(γ): other: 1395.1 12 from Coulomb excitation. Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
1397.5 | 901.4 | E(γ): From 238U(76Ge,Xγ) (2009St12) |
1596.4 | 945.2 | E(γ): From 238U(76Ge,Xγ) (2009St12) |
1692.93 | 1692.8 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
1721.60 | 1721.3 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
1813.4 | 581.4 | E(γ): From 238U(76Ge,Xγ) (2009St12) |
1924.70 | 1924.5 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
1980.09 | 1979.7 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
E(level) | E(gamma) | Comments |
2109.17 | 2108.9 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
2246.3 | 2246.1 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
2466.6 | 2466.4 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
2527.9 | 1130.4 | E(γ): From 238U(76Ge,Xγ) (2009St12) |
2718.2 | 904.8 | E(γ): From 238U(76Ge,Xγ) (2009St12) |
2761.2 | 1164.8 | E(γ): From 238U(76Ge,Xγ) (2009St12) |
2770.49 | 2770.2 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
2814.4 | 2814.2 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
2986.9 | 2986.7 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
3099.1 | 3098.8 | E(γ): Final level could be the g.s. and/or closely-spaced level at <0.3 keV according to data in 73Zn β- decay (24.5 s) (2017Ve05). In the least-squares fitting procedure, the final level is assumed to be at 0.15 keV 15 to cover the range up to 0.3 keV |
3397.2 | 869.4 | E(γ): From 238U(76Ge,Xγ) (2009St12) |
3828.3 | 1067.3 | E(γ): From 238U(76Ge,Xγ) (2009St12) |
3973.3 | 1255.2 | E(γ): From 238U(76Ge,Xγ) (2009St12) |
5292.5 | 1319.2 | E(γ): From 238U(76Ge,Xγ) (2009St12) |
Mass measurement: 2007Gu09
Levels: The γ cascades are from 2009St12
Q-value: S(2n)=15702.8 19, S(2p)=21566.2 22, Q(2β-)=1253 4 (2017Wa10)