Thermal-Neutron-Capture Gamma-Ray Studies of the Excited States of Odd-AHafnium Isotopes

1967 ◽  
Vol 158 (4) ◽  
pp. 1206-1213 ◽  
Author(s):  
A. I. Namenson ◽  
H. H. Bolotin

1970 ◽  
Vol 48 (10) ◽  
pp. 1109-1129 ◽  
Author(s):  
L. V. Johnson ◽  
T. J. Kennett

The 39K(n,γ)40K reaction has been studied using a Ge(Li) and a Ge(Li)–Ge(Li) spectrometer. A total of 252 gamma-ray transitions has been observed and a gamma–gamma coincidence matrix involving 62 transitions has been established. A decay scheme based on the experimental results is deduced for 202 of the observed gamma-ray transitions. Spins and parities of some excited states have been estimated from the deduced branching ratios. The neutron separation energies of the 40K and 42K nuclei have been determined as 7800.5 ± 0.2 and 7535.2 ± 1.5 keV respectively.



1972 ◽  
Vol 5 (2) ◽  
pp. 513-527 ◽  
Author(s):  
D. H. White ◽  
R. E. Birkett




1979 ◽  
Vol 53 (1-2) ◽  
pp. 203-212 ◽  
Author(s):  
I. K. Al-Haddad ◽  
D. R. Chettle ◽  
J. H. Fremlin ◽  
T. C. Harvey


1974 ◽  
Vol 121 (3) ◽  
pp. 581-587 ◽  
Author(s):  
Gerald D. Loper ◽  
George E. Thomas ◽  
Lowell M. Bollinger


1972 ◽  
Vol 188 (1) ◽  
pp. 129-138 ◽  
Author(s):  
E. Wallander ◽  
E. Selin


Physica ◽  
1969 ◽  
Vol 40 (4) ◽  
pp. 567-580 ◽  
Author(s):  
E.R. Reddingius ◽  
H. Postma


1972 ◽  
Vol 50 (22) ◽  
pp. 2845-2855 ◽  
Author(s):  
A. F. M. Ishaq ◽  
A. H. Colenbrander ◽  
T. J. Kennett

The gamma-ray spectrum following thermal neutron capture in aluminum has been studied using a Ge(Li) pair spectrometer. A total of 143 transitions has been observed above 2.1 MeV, and most of these have been placed in a decay scheme. Some 51 levels in 28Al are observed to be populated in the reaction. The Q value for the 27Al(n,γ)28Al reaction is estimated to be 7725.4 ± 0.5 keV, and the multiplicity is found to be 2.0. The mean relative strengths of primary E1 and M1 transitions have been calculated and an attempt has been made to use these to determine the multipolarities of primary transitions leading to levels of unknown parity.



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