ADOPTED LEVELS for 162Eu

Author: N. Nica |  Citation: Nucl. Data Sheets 195, 1 (2024) |  Cutoff date: 19-Sep-2023 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=5558 keV 4S(n)= 5003 keV 10S(p)= 9340 keV 7Q(α)= -2041.7 keV 16
Reference: 2021WA16

References:
  A  162Sm β- decay  B  162Eu IT decay

General Comments:

Measured Q(β-): 5577 35 (2014Ha38), 5585 60 (2010Ha38), 5575 60 (2007Ha57)

For unplaced γ’s see 162Sm β- decay dataset

Q-value: S(2n)=11372.1 16, S(2p)=20406.2 24 (2021Wa16)






E(level)
(keV)
XREFJπ(level) T1/2(level)
    0.0AB (6+) 11.4 s 6 
% β- = 100
  158.4 24  B (3-) % IT = ?
% β- = ?

Jπ(level): Adopted values proposed by 2021Wa16 (in order to explain the relatively strong β feeding of the 2+, 3+, 4+, 6+ and 6- levels) to be: 6+, ν5/2[413]~#ν7/2[633] for g.s. and 3-, ν5/2[413]~#ν1/2[521] for 158.4 isomer, respectively, by comparing with neghboring nuclei (see 2021Wa04 for the list of them). 2018Ha19 proposed (1+), π5/2[413]~#ν7/2[633] for g.s. and (6+), π5/2[413]~#ν7/2[633] for isomer assuming that they separated the β decay of the isomer based on T1/2, which was contradicted by 2021Wa04 T1/2 measurements.

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments

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