ADOPTED LEVELS, GAMMAS for 74Rb

Authors: Balraj Singh, Ameenah R. Farhan |  Citation: Nucl. Data Sheets 107, 1923 (2006) |  Cutoff date: 30-Apr-2006 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=-1.109×104 keV SYS(n)= 1.391×104 keV SYS(p)= 2653 keV 8Q(α)= -2915 keV 16
Reference: 2012WA38

References:
  A  40Ca(40Ca,APNG) 

General Comments:

74Rb isotope produced in the following reactions followed by mass-separation: 1975BoYS: 50Cr(32S,3p5n); 1977Da04,1979Ep01: spallation reaction using Nb(p,X) and La(p,X) reactions; 1996Jo17,2001Oi04,2002Oi02: 93Nb(p,X) E=1 GeV; 1998Lo17: 92Mo beam fragmentation; 1999Lo07,2001Ga24: Ni(92Mo,X); 2001Ba12,2002Do08,2002Zg01: Nb(p,X)

Other reactions:

1991Ba01, 1989Le12: 58Ni(16O,p)(16O,π+)(16O,π-) E=94 MeV/nucleon, measured cross section and model calculations.

Mass measurements: 2004Ke14, 2004Ke10, 2002He23, 1982Au01, 1979Ep01

α novel method is in progress at JYFL (see JYFL Accelerator News volume 14, No. 1, February 2006) to study level structure of 74Rb through β-decay tagging method in reaction where Ca target is bombarded with a 36Ar beam at energies just above the Coulomb barrier. Results of this study are not yet available but the 6+ and 8+ members of the g.s. (t=1) band may have been identified in this study according to an e-mail reply (March 20, 2006) from one of the researchers of this study.

Q-value: Note: Current evaluation has used the following Q record

Q-value: Δ(Q(β-))=500, Δ(S(n))=150, Δ(Q(α))=310 (2003Au03)

Q-value: Q(εp decay)=4420 50 (2003Au03)









E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
M(γ)Final Levels
      0.0A 0+ 64.776 ms 30 
% ε = 100
    
    478A (2+)      478

      0.0
0+
   1006A (3+)      528
D
    478
(2+)
   1053A (4+)      575
Q
    478
(2+)
   1225A (4+)      219
D
   1006
(3+)
   1489A (5+)      265
   483
D
Q
   1225
   1006
(4+)
(3+)
   1546A (6+)      493
Q
   1053
(4+)
   1793A (7+)      304
Q
   1489
(5+)
   1806A (6+)      581
Q
   1225
(4+)
   2241A (8+)      695
Q
   1546
(6+)
   2313A (9+)      520

   1793
(7+)
   2972?A      731?

   2241
(8+)
   3126A (10+)      885

   2241
(8+)
   3137A (11+)      824

   2313
(9+)
   4091A (13+)      954

   3137
(11+)
   4177A (12+)     1051

   3126
(10+)
   5216A (15+)     1125
Q
   4091
(13+)
   5360A (14+)     1183

   4177
(12+)
   6517A (17+)     1301

   5216
(15+)
   6686A (16+)     1326

   5360
(14+)
   8006A (19+)     1489

   6517
(17+)
   8193A (18+)     1507

   6686
(16+)
   9654A (21+)     1648

   8006
(19+)
   9881A (20+)     1688

   8193
(18+)
  11411A (23+)     1757

   9654
(21+)
  11701?A (22+)     1820?

   9881
(20+)
  13376A (25+)     1965

  11411
(23+)
  15699A (27+)     2323

  13376
(25+)
E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
M(γ)Final Levels
  18478A (29+)     2779

  15699
(27+)
  21612A (31+)     3134

  18478
(29+)

Jπ(level): As proposed in 40Ca(40Ca,αpnγ) (2003Ol02) levels above g.s. The assignments are based on γγ(θ)(DCO) for selected γ rays, and band associations. Parentheses are added by the evaluators

M(γ): From γγ(θ)(DCO). Mult=Q indicates ΔJ=2, mult=d indicates ΔJ=1 transition

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)M(γ)Final Levels
Band 1 - T=1 band, GS band.
      0.0 0+ 64.776 ms 30 
% ε = 100
    
    478 (2+)      478

      0.0
0+
   1053 (4+)      575
Q
    478
(2+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)M(γ)Final Levels
Band 2 - T=0 band, π3/2[312]ν3/2[312], Kπ=3+
   1006 (3+)       
   1225 (4+)      219
D
   1006
(3+)
   1489 (5+)      265
   483
D
Q
   1225
   1006
(4+)
(3+)
   1806 (6+)      581
Q
   1225
(4+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)M(γ)Final Levels
Band 3 - T=0 band, BASED ON 6+, πg9/2~#νg9/2
   1546 (6+)       
   2241 (8+)      695
Q
   1546
(6+)
   3126 (10+)      885

   2241
(8+)
   4177 (12+)     1051

   3126
(10+)
   5360 (14+)     1183

   4177
(12+)
   6686 (16+)     1326

   5360
(14+)
   8193 (18+)     1507

   6686
(16+)
   9881 (20+)     1688

   8193
(18+)
  11701 (22+)     1820?

   9881
(20+)
E(level)
(keV)
Jπ(level) T1/2(level)E(γ)M(γ)Final Levels
Band 4 - T=0 band, BASED ON 7(+), πg9/2~#νg9/2
   1793 (7+)       
   2313 (9+)      520

   1793
(7+)
   3137 (11+)      824

   2313
(9+)
   4091 (13+)      954

   3137
(11+)
   5216 (15+)     1125
Q
   4091
(13+)
   6517 (17+)     1301

   5216
(15+)
   8006 (19+)     1489

   6517
(17+)
   9654 (21+)     1648

   8006
(19+)
  11411 (23+)     1757

   9654
(21+)
  13376 (25+)     1965

  11411
(23+)
  15699 (27+)     2323

  13376
(25+)
  18478 (29+)     2779

  15699
(27+)
  21612 (31+)     3134

  18478
(29+)

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
      0.00+ 64.776 ms 30 
% ε = 100
E(level): T=1 band, GS band.
    478(2+)   E(level): T=1 band, GS band.
   1006(3+)   E(level): T=0 band, π3/2[312]ν3/2[312], Kπ=3+.
   1053(4+)   E(level): T=1 band, GS band.
   1225(4+)   E(level): T=0 band, π3/2[312]ν3/2[312], Kπ=3+.
   1489(5+)   E(level): T=0 band, π3/2[312]ν3/2[312], Kπ=3+.
   1546(6+)   E(level): T=0 band, BASED ON 6+, πg9/2~#νg9/2.
   1793(7+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
   1806(6+)   E(level): T=0 band, π3/2[312]ν3/2[312], Kπ=3+.
   2241(8+)   E(level): T=0 band, BASED ON 6+, πg9/2~#νg9/2.
   2313(9+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
   3126(10+)   E(level): T=0 band, BASED ON 6+, πg9/2~#νg9/2.
   3137(11+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
   4091(13+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
   4177(12+)   E(level): T=0 band, BASED ON 6+, πg9/2~#νg9/2.
   5216(15+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
   5360(14+)   E(level): T=0 band, BASED ON 6+, πg9/2~#νg9/2.
   6517(17+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
   6686(16+)   E(level): T=0 band, BASED ON 6+, πg9/2~#νg9/2.
   8006(19+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
   8193(18+)   E(level): T=0 band, BASED ON 6+, πg9/2~#νg9/2.
   9654(21+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
   9881(20+)   E(level): T=0 band, BASED ON 6+, πg9/2~#νg9/2.
  11411(23+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
  11701(22+)   E(level): T=0 band, BASED ON 6+, πg9/2~#νg9/2.
E(level)Jπ(level)T1/2(level)Comments
  13376(25+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
  15699(27+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
  18478(29+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.
  21612(31+)   E(level): T=0 band, BASED ON 7(+), πg9/2~#νg9/2.

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