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 17S(n)= 9182.4 keV 19S(p)= 8843 keV 3Q(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

General Comments:

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)









E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)Final Levels
     0.0A   EF 1/2- 4.86 h 3 
% β- = 100
    
    <0.3ABCDEF 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)
XREFJπ(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)
XREFJπ(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)
XREFJπ(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.

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Band Transitions:

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-)

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.01/2- 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.
     0.33/2- < 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.
  15295/2-,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.
  1924.701/2-,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.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   198.95   198.8E(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   218.0E(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   278.2E(γ): weighted average of 278.1 3 from 73Zn β- decay (24.5 s) and 279.0 7 from Coulomb excitation
   297.3E(γ): other: 298 2 from Coulomb excitation (2010Di14)
   495.9E(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   155.0E(γ): From 238U(76Ge,Xγ) (2009St12)
I(γ): From 238U(76Ge,Xγ) (2009St12)
   433.0E(γ): other: 434.0 15 from Coulomb excitation (2010Di14). From 238U(76Ge,Xγ) (2009St12)
I(γ): From 238U(76Ge,Xγ) (2009St12)
   452.1E(γ): other: 451.7 11 from Coulomb excitation (2010Di14). From 238U(76Ge,Xγ) (2009St12)
I(γ): From 238U(76Ge,Xγ) (2009St12)
   651.2E(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   910.8E(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   456.2E(γ): From 238U(76Ge,Xγ) (2009St12)
I(γ): From 238U(76Ge,Xγ) (2009St12)
   734.2E(γ): From 238U(76Ge,Xγ) (2009St12)
I(γ): From 238U(76Ge,Xγ) (2009St12)
   753.3E(γ): From 238U(76Ge,Xγ) (2009St12)
I(γ): From 238U(76Ge,Xγ) (2009St12)
   952.4E(γ): From 238U(76Ge,Xγ) (2009St12)
I(γ): From 238U(76Ge,Xγ) (2009St12)
  1113.7  1113.5E(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   279.7E(γ): From 238U(76Ge,Xγ) (2009St12)
I(γ): From 238U(76Ge,Xγ) (2009St12)
   580.9E(γ): From 238U(76Ge,Xγ) (2009St12)
I(γ): From 238U(76Ge,Xγ) (2009St12)
  1393.17  1392.9E(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   901.4E(γ): From 238U(76Ge,Xγ) (2009St12)
  1596.4   945.2E(γ): From 238U(76Ge,Xγ) (2009St12)
  1692.93  1692.8E(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  1721.3E(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   581.4E(γ): From 238U(76Ge,Xγ) (2009St12)
  1924.70  1924.5E(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  1979.7E(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  2108.9E(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  2246.1E(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  2466.4E(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  1130.4E(γ): From 238U(76Ge,Xγ) (2009St12)
  2718.2   904.8E(γ): From 238U(76Ge,Xγ) (2009St12)
  2761.2  1164.8E(γ): From 238U(76Ge,Xγ) (2009St12)
  2770.49  2770.2E(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  2814.2E(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  2986.7E(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  3098.8E(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   869.4E(γ): From 238U(76Ge,Xγ) (2009St12)
  3828.3  1067.3E(γ): From 238U(76Ge,Xγ) (2009St12)
  3973.3  1255.2E(γ): From 238U(76Ge,Xγ) (2009St12)
  5292.5  1319.2E(γ): From 238U(76Ge,Xγ) (2009St12)

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