AN ANALYSIS OF E2-M1 MULTIPQLE MIXING RATIOS OF (2'+->- 2+) GAMMA TRANSITIONS IN EVEN-EVEN NUCLEI
AN ANALYSIS OF E2-M1 MULTIPQLE MIXING RATIOS OF (2'+->- 2+) GAMMA TRANSITIONS IN EVEN-EVEN NUCLEI
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Date
1987-02
Authors
BABA-KUTIGI, ADAMU NCHAMA
Journal Title
Journal ISSN
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Abstract
A systematic survey is presented to analyse E2/M1 mixing
+ +
ratios '6' of Gamma transition between the 2' and 2 levels for
+ + +
the cascade 2* ->2 +0 of even-even nuclei of mass range 58SAS200.
The experimental data for transition in even-even nuclei within
this range of mass number have been critically surveyed to provide
the most accurate result for comparison with theoretical calculati
Particular attention is given to the variation in the phase of
the mixing ratios ' <5 ' which are deduced from the literature.
Theroretical approaches to the calculations of these mixing ratios
' <5 ' on the bases of different models are considered and compared
with experimental value. The experimental values of the angular
+ + +
correlation coefficient A„ and A. for the cascade 2' *+-2 -*0 have
2 4
^ e u collected and analysed. The multipole mixing ratios £or the
(2* ->-2 ) gamma-transition are analysed by two methods (i) Arns
and Wiedenbeck using A values or A values and (ii) that of
Coleman using A and A values. These mixing ratios are compared
with the values obtained from the literatures by the different
methods. The phases and values
the analysis. The plot of in
common are taken from
; Mass number is given
along with values obtained by the Weisskopf estimate and the
Davydov and Filippov estimate. Many classiffications are obtained
in the values of mixing ratios.
Description
A thesis submitted to the Postraduate School.
Ahmadu Bello University, in partial fulfilment
of the requirement for the degree of Master of
Science in Nuclear Physics.
Department of Physics
Faculty of Science
Ahmadu Bello University
Zaria - NIGERIA.
Keywords
ANALYSIS, E2-M1 MULTIPOLE, MIXING RATIOS, TRANSITIONS, EVEN-EVEN, NUCLEI