ADOPTED LEVELS, GAMMAS for 68Se

Author: E.A. Mccutchan |  Citation: Nucl. Data Sheets 113, 1735 (2012) |  Cutoff date: 1-Mar-2012 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-1.57×104 keV SYS(n)= 1.568×104 keV 7S(p)= 4891.2 keV 7Q(α)= -2299 keV 4
Reference: 2012WA38

References:
  A  12C(58Ni,2nγ)  B  58Ni(12C,2nγ)
  C  40Ca(36Ar,2αγ)  D  Coulomb Excitation








E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
      0ABCD 0+ 35.5 s 7 
% ε = 100
     
    853.75 21 ABCD 2+ 2.8 ps 4     853.71 22 
  100
E2
      0
0+
   1196.7 10 ? B   (2+)      343?
  100

    853.75
2+
   1593.9 5 A C  2+      740 1 
  1594 1 
 
 


    853.75
      0
2+
0+
   1942.1 3 ABC  4+     1088.3 2 
  100
Q
    853.75
2+
   2433.3 8 A        2433
  100

      0
0+
   2545.1 4 ABC  4+      602?
   951.1 5 
  1691.7 5 
 
  <23
  100 23 



   1942.1
   1593.9
    853.75
4+
2+
2+
   2766.0 9 ? B   (6+)      823.9 8 ?
  100

   1942.1
4+
   3073.5 8 A         640
  2220
 
 


   2433.3
    853.75

2+
   3303.7 4 A C  6+     1361.5 3 
  100
Q
   1942.1
4+
   3571.2 8 AB   (5-)     1629.1 7 
  100

   1942.1
4+
   3705.7 4 A C  6+     1160.7 3 
  1764 1 
  100 22 
   74 22 
Q

   2545.1
   1942.1
4+
4+
   4198.5 10 AB   (7-)      627.3 6 
  100

   3571.2
(5-)
   4752.3 4 A C  8+     1046.7 3 
  1448.5 3 
   75 31 
  100 17 
Q
Q
   3705.7
   3303.7
6+
6+
   4870.7 11 A    8+     1567
  100

   3303.7
6+
   5959.7 5 A C  10+     1207.4 3 
  100
Q
   4752.3
8+
   6603.8 15 ?A    10+     1733?
  100

   4870.7
8+
   7331.8 6 A C  12+     1372.0 3 
  100
Q
   5959.7
10+
   8823.7 7 A C  14+     1491.9 3 
  100
Q
   7331.8
12+
   9871.4 8   C  16+     1047.7 5 
  100
Q
   8823.7
14+
  11040.0 9   C  18+     1168.6 3 
  100
Q
   9871.4
16+
  12797.1 10   C  (20+)     1757.1 5 
  100

  11040.0
18+
  15185.2 22   C  (22+)     2388 2 
  100

  12797.1
(20+)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
  18075 4   C  (24+)     2890 3 
  100

  15185.2
(22+)
  21201 5 ?  C  (26+)     3126 4 ?
  100

  18075
(24+)

E(level): From least-squares fit to Eγ’s, by evaluator; ΔE=1 keV assumed for γ’s where uncertainty is not stated.

Jπ(level): From 40Ca(36Ar,2αγ), except where noted. Based on γ(θ) and assumed band structure.

E(γ): From 40Ca(36Ar,2αγ), except where noted.

I(γ): Relative intensity branches from 40Ca(36Ar,2αγ)

M(γ): From γ(θ) in 40Ca(36Ar,2αγ)

Back to top

Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - GS band (OBLATE).
      0 0+ 35.5 s 7 
% ε = 100
     
    853.75 21  2+ 2.8 ps 4     853.71 22 
  100
E2
      0
0+
   1942.1 3  4+     1088.3 2 
  100
Q
    853.75
2+
   3303.7 4  6+     1361.5 3 
  100
Q
   1942.1
4+
   4870.7 11  8+     1567
  100

   3303.7
6+
   6603.8 15  10+     1733?
  100

   4870.7
8+
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 2 - SIDE band (PROLATE).
   1593.9 5  2+        
   2545.1 4  4+      602?
   951.1 5 
  1691.7 5 
 
  <23
  100 23 



   1942.1
   1593.9
    853.75
4+
2+
2+
   3705.7 4  6+     1160.7 3 
  1764 1 
  100 22 
   74 22 
Q

   2545.1
   1942.1
4+
4+
   4752.3 4  8+     1046.7 3 
  1448.5 3 
   75 31 
  100 17 
Q
Q
   3705.7
   3303.7
6+
6+
   5959.7 5  10+     1207.4 3 
  100
Q
   4752.3
8+
   7331.8 6  12+     1372.0 3 
  100
Q
   5959.7
10+
   8823.7 7  14+     1491.9 3 
  100
Q
   7331.8
12+
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 3 - Band based on 18+ level
  11040.0 9  18+        
  12797.1 10  (20+)     1757.1 5 
  100

  11040.0
18+
  15185.2 22  (22+)     2388 2 
  100

  12797.1
(20+)
  18075 4  (24+)     2890 3 
  100

  15185.2
(22+)
  21201 5  (26+)     3126 4 ?
  100

  18075
(24+)

Back to top

Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
    853.75 2+ 2.8 ps 4     853.71 22 E20.000618B(E2)(W.u.)=27 4, α=0.000618 9, α(K)=0.000550 8, α(L)=5.79E-5 9, α(M)=9.00E-6 13, α(N+)=7.65E-7 11

Back to top

Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      00+ 35.5 s 7 
% ε = 100
E(level): GS band (OBLATE).
    853.752+ 2.8 ps 4  B(E2)=0.22 3
E(level): GS band (OBLATE).
   1196.7(2+)   E(level): From 58Ni(12C,2nγ).
Jπ(level): Suggested from systematics of neighboring even-even nuclei (1998Sk02).
   1593.92+   E(level): SIDE band (PROLATE).
   1942.14+   E(level): GS band (OBLATE).
   2545.14+   E(level): SIDE band (PROLATE).
   2766.0(6+)   E(level): From 58Ni(12C,2nγ).
Jπ(level): Suggested from systematics of neighboring even-even nuclei (1998Sk02).
   3303.76+   E(level): GS band (OBLATE).
   3571.2(5-)   E(level): From 58Ni(12C,2nγ).
Jπ(level): Suggested from systematics of neighboring even-even nuclei (1998Sk02).
   3705.76+   E(level): SIDE band (PROLATE).
   4198.5(7-)   E(level): From 58Ni(12C,2nγ).
Jπ(level): Suggested from systematics of neighboring even-even nuclei (1998Sk02).
   4752.38+   E(level): SIDE band (PROLATE).
   4870.78+   E(level): GS band (OBLATE).
   5959.710+   E(level): SIDE band (PROLATE).
   6603.810+   E(level): GS band (OBLATE).
   7331.812+   E(level): SIDE band (PROLATE).
   8823.714+   E(level): SIDE band (PROLATE).
  11040.018+   E(level): Band based on 18+ level.
  12797.1(20+)   E(level): Band based on 18+ level.
  15185.2(22+)   E(level): Band based on 18+ level.
  18075(24+)   E(level): Band based on 18+ level.
  21201(26+)   E(level): Band based on 18+ level.

Back to top

Additional Gamma Comments:

E(level)E(gamma)Comments
    853.75    853.71E(γ): from weighted average of 853.9 3 (1990Li25), 854.2 3 (1998Sk02), and 853.4 2 (2003Fi07).
   1196.7    343E(γ): From 58Ni(12C,2nγ)
   2433.3   2433E(γ): From 12C(58Ni,2nγ)
   2545.1    602E(γ): From 12C(58Ni,2nγ)
   2766.0    823.9E(γ): From 58Ni(12C,2nγ)
   3073.5    640E(γ): From 12C(58Ni,2nγ)
   2220E(γ): From 12C(58Ni,2nγ)
   3571.2   1629.1E(γ): From 58Ni(12C,2nγ)
   4198.5    627.3E(γ): From 58Ni(12C,2nγ)

Back to top