ADOPTED LEVELS, GAMMAS for 64Ge

Authors: Balraj Singh and Jun Chen |  Citation: Nucl. Data Sheets 178, 41 (2021). |  Cutoff date: 12-Nov-2021 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-14780 keV SYS(n)= 15470 keV 40S(p)= 5057 keV 4Q(α)= -2566 keV 4
Reference: 2021WA16

References:
  A  64As ε decay (69.0 MS)  B  65Se εp decay (34.2 MS)
  C  12C(54Fe,2nγ),54Fe(12C,2nγ)  D  40Ca(32S,2αγ)

General Comments:

Mass measurements: 2007Cl01, 2007Sc24, 2005Cl08, 2002Li24

Theory references: consult the NSR database at www.nndc.bnl.gov for 101 primary references, 96 dealing with nuclear structure calculations, and five for half-lives in β and cluster decays.

The decay scheme of 64As to 64Ge is not known.

Q-value: Estimated ΔQ(β-)=200 (2021Wa16)

Q-value: Q(ε)=4517 4, Q(εp)=609 4, S(2n)=28320 140 (syst), S(2p)=7725 4 (2021Wa16)










E(level)
(keV)		XREFJπ(level) T1/2(level)E(γ)
(keV)		I(γ)M(γ)Final Levels
     0.0 BCD 0+ 63.7 s 25 
% ε = 100
% εp = ?
     
   901.7 3  BCD 2+ 2.29 ps 35     901.5 3 
  100
E2
     0.0
0+
  1578.7 3   CD (2+) 5.5 ps +28-14     677.0 3 
  1579.0 4 
  100 5 
   16.0 10 
(M1+E2)
[E2]
   901.7
     0.0
2+
0+
  2052.6 4   CD 4+     1150.8 4 
  100
E2+M3
   901.7
2+
  2154.8 4   C  (4+)      576.2 3 
  100

  1578.7
(2+)
  2669.6 5   CD (4+)     1090.9 4 
  100

  1578.7
(2+)
  2969.7 5   CD (3-)     2067.8 5 
  2970?
  100 8 
   ≤5

[E3]
   901.7
     0.0
2+
0+
  3406.7 5   C  (6+)     1252.1 4 
  1353.7 5 
  100 5 
   53 3 


  2154.8
  2052.6
(4+)
4+
  3465.6 6   C  (6+)     1413.0 4 
  100
(Q)
  2052.6
4+
  3716.9 7   CD (5-) 16.8 ps +24-20     747.5 3 
  1047.3 4 
  1664.8 4 
   12.9 28 
   19.8 31 
  100.0 32 
(E2)
(E1)
(E1+M2)
  2969.7
  2669.6
  2052.6
(3-)
(4+)
4+
  4245.7 6   CD (7-) 29.9 ps +20-17     528.4 3 
  100
E2
  3716.9
(5-)
  5025.5 8   C      1308.5 5 
  100

  3716.9
(5-)
  5175.2 7   C  (8+)     1768.5 5 
  100

  3406.7
(6+)
  5180.0 8   C  (8+)     1714.4 5 
  100

  3465.6
(6+)
  5372.9 7   CD (9-) ≤ 2.8 ps   1127.2 4 
  100
E2
  4245.7
(7-)
  6564.4 8   C  (11-)     1191.5 4 
  100

  5372.9
(9-)
  6606.8 20    D (10)     1234 1 
  100
D+Q
  5372.9
(9-)
  7578.9 20    D (10)     2206 1 
  100
D+Q
  5372.9
(9-)
  8006.8 10   C  (13-)     1442.4 5 
  100

  6564.4
(11-)
  8426.9 21    D (12)      848 1 
  1819.8 6 
   73 8 
  100 10 
Q(+O)
Q(+O)
  7578.9
  6606.8
(10)
(10)
  9299.9 23    D (14)      873 1 
  100
Q(+O)
  8426.9
(12)

T1/2(level): From recoil-distance Doppler-shift (RDDS) method in 40Ca(32S,2αγ) (2003Fa01), unless otherwise stated

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Band Transitions:

E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - g.s. band
     0.0 0+ 63.7 s 25 
% ε = 100
% εp = ?
     
   901.7 3  2+ 2.29 ps 35     901.5 3 
  100
E2
     0.0
0+
  2052.6 4  4+     1150.8 4 
  100
E2+M3
   901.7
2+
  3465.6 6  (6+)     1413.0 4 
  100
(Q)
  2052.6
4+
  5180.0 8  (8+)     1714.4 5 
  100

  3465.6
(6+)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - Band based on 3(-).
  2969.7 5  (3-)        
  3716.9 7  (5-) 16.8 ps +24-20     747.5 3 
  1047.3 4 
  1664.8 4 
   12.9 28 
   19.8 31 
  100.0 32 
(E2)
(E1)
(E1+M2)
  2969.7
  2669.6
  2052.6
(3-)
(4+)
4+
  4245.7 6  (7-) 29.9 ps +20-17     528.4 3 
  100
E2
  3716.9
(5-)
  5372.9 7  (9-) ≤ 2.8 ps   1127.2 4 
  100
E2
  4245.7
(7-)
  6564.4 8  (11-)     1191.5 4 
  100

  5372.9
(9-)
  8006.8 10  (13-)     1442.4 5 
  100

  6564.4
(11-)
E(level)
(keV)		Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Band based on (2+).
  1578.7 3  (2+) 5.5 ps +28-14       
  2154.8 4  (4+)      576.2 3 
  100

  1578.7
(2+)
  3406.7 5  (6+)     1252.1 4 
  1353.7 5 
  100 5 
   53 3 


  2154.8
  2052.6
(4+)
4+
  5175.2 7  (8+)     1768.5 5 
  100

  3406.7
(6+)

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Additional Gamma Data:













E(level)
(keV)		Jπ(level)T1/2(level)E(γ)
(keV)		MultipolarityMixing
Ratio		Additional Data
   901.7 2+ 2.29 ps 35     901.5 3 E2 B(E2)(W.u.)=27 +5-4
  1578.7 (2+) 5.5 ps +28-14     677.0 3 (M1+E2) B(E2)(W.u.)=21 7, B(M1)(W.u.)=0.0056 19
(2+) 5.5 ps +28-14    1579.0 4 [E2] B(E2)(W.u.)=0.095 33
  2052.6 4+     1150.8 4 E2+M3+0.06 1 
  3716.9 (5-) 16.8 ps +24-20     747.5 3 (E2) B(E2)(W.u.)=0.92 22
(5-) 16.8 ps +24-20    1047.3 4 (E1) B(E1)(W.u.)=3.3E-6 6
(5-) 16.8 ps +24-20    1664.8 4 (E1+M2)-0.09 3 
  4245.7 (7-) 29.9 ps +20-17     528.4 3 E2 B(E2)(W.u.)=30.2 20
  5372.9 (9-) ≤ 2.8 ps   1127.2 4 E2 B(E2)(W.u.)≥7.3
  6606.8 (10)     1234 1 D+Q-3.5 +34-24 
  7578.9 (10)     2206 1 D+Q-6 +6-7 
  8426.9 (12)      848 1 Q(+O)+0.08 5 
(12)     1819.8 6 Q(+O)-0.06 7 
  9299.9 (14)      873 1 Q(+O)0.00 7 

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     0.00+ 63.7 s 25 
% ε = 100
% εp = ?
E(level): g.s. band.
   901.72+ 2.29 ps 35  E(level): g.s. band.
  1578.7(2+) 5.5 ps +28-14  E(level): Band based on (2+).
  2052.64+   E(level): g.s. band.
  2154.8(4+)   E(level): Band based on (2+).
  2969.7(3-)   E(level): Band based on 3(-).
  3406.7(6+)   E(level): Band based on (2+).
  3465.6(6+)   E(level): g.s. band.
  3716.9(5-) 16.8 ps +24-20  E(level): Band based on 3(-).
  4245.7(7-) 29.9 ps +20-17  E(level): Band based on 3(-).
  5175.2(8+)   E(level): Band based on (2+).
  5180.0(8+)   E(level): g.s. band.
  5372.9(9-) ≤ 2.8 ps E(level): Band based on 3(-).
  6564.4(11-)   E(level): Band based on 3(-).
  8006.8(13-)   E(level): Band based on 3(-).

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Additional Gamma Comments:

E(level)E(gamma)Comments
  1578.7   677.0M(γ): from γ(θ) in 12C(54Fe,2nγ), and RUL
  2669.6  1090.9M(γ): ΔJ=1 γ from 12C(54Fe,2nγ),54Fe(12C,2nγ) is inconsistent with ΔJ=2 from ΔJπ
  3716.9   747.5I(γ): unweighted average of 10.0 9 (54Fe,2nγ) and 15.7 11 (32S,2αγ)
  1047.3I(γ): unweighted average of 16.7 9 (54Fe,2nγ) and 22.9 16 (32S,2αγ)
  1664.8I(γ): unweighted average of 100.0 32 (54Fe,2nγ) and 100.0 54 (32S,2αγ)

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