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Title: Systematics of the shears mechanism in silver isotopes

Abstract

A systematic investigation of the shears mechanism in silver isotopes has been carried out. Lifetimes have been measured by means of the Doppler-shift attenuation method for states in two magnetic dipole (M1) bands in {sup 105}Ag and one each in {sup 103}Ag and {sup 106}Ag. Experimental total angular momenta and reduced transition strengths for these bands have been compared with the predictions of the tilted axis cranking (TAC) model with configurations involving one g{sub 9/2} proton and quasineutrons from the h{sub 11/2} and g{sub 7/2} or d{sub 5/2} orbitals. There is good overall agreement for both the total angular momenta and reduced transition strengths. The deduced B(M1) strengths, which are a sensitive probe of magnetic rotation, show a decrease consistent with TAC predictions for one M1 band in {sup 105}Ag and in {sup 106}Ag, confirming the shears mechanism as the means of excitation. Furthermore, the staggering in the transition energies in {sup 103}Ag and absence of regular sequences of M1 transitions for N{<=}56 suggest that N=56 is the lower boundary for the appearance of the shears mechanism in this mass region.

Authors:
; ; ; ; ; ; ; ; ; ;  [1];  [2];  [2];  [2];  [2];  [2]
  1. Department of Physics, University of Mumbai, Vidyanagari, Mumbai 400 098 (India)
  2. (India)
Publication Date:
OSTI Identifier:
20771336
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.73.034313; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ANGULAR MOMENTUM; CRANKING MODEL; DSA METHOD; EXCITATION; LIFETIME; M1-TRANSITIONS; MAGNETIC DIPOLES; PROTONS; ROTATION; SILVER 103; SILVER 105; SILVER 106

Citation Formats

Deo, A.Y., Patel, S.B., Tandel, S.K., Muralithar, S., Singh, R.P., Kumar, R., Bhowmik, R.K., Ghugre, S.S., Singh, A.K., Kumar, V., Amita, Nuclear Science Centre, P.O. Box 10502, New Delhi 110 067, Inter-University Consortium for DAE Facilities, Calcutta 700 091, Department of Physics and Meteorology, IIT Kharagpur, Kharagpur 721 302, Department of Physics, Panjab University, Chandigarh 160 014, and Department of Physics, RBS College, Agra 282 002. Systematics of the shears mechanism in silver isotopes. United States: N. p., 2006. Web. doi:10.1103/PhysRevC.73.034313.
Deo, A.Y., Patel, S.B., Tandel, S.K., Muralithar, S., Singh, R.P., Kumar, R., Bhowmik, R.K., Ghugre, S.S., Singh, A.K., Kumar, V., Amita, Nuclear Science Centre, P.O. Box 10502, New Delhi 110 067, Inter-University Consortium for DAE Facilities, Calcutta 700 091, Department of Physics and Meteorology, IIT Kharagpur, Kharagpur 721 302, Department of Physics, Panjab University, Chandigarh 160 014, & Department of Physics, RBS College, Agra 282 002. Systematics of the shears mechanism in silver isotopes. United States. doi:10.1103/PhysRevC.73.034313.
Deo, A.Y., Patel, S.B., Tandel, S.K., Muralithar, S., Singh, R.P., Kumar, R., Bhowmik, R.K., Ghugre, S.S., Singh, A.K., Kumar, V., Amita, Nuclear Science Centre, P.O. Box 10502, New Delhi 110 067, Inter-University Consortium for DAE Facilities, Calcutta 700 091, Department of Physics and Meteorology, IIT Kharagpur, Kharagpur 721 302, Department of Physics, Panjab University, Chandigarh 160 014, and Department of Physics, RBS College, Agra 282 002. Wed . "Systematics of the shears mechanism in silver isotopes". United States. doi:10.1103/PhysRevC.73.034313.
@article{osti_20771336,
title = {Systematics of the shears mechanism in silver isotopes},
author = {Deo, A.Y. and Patel, S.B. and Tandel, S.K. and Muralithar, S. and Singh, R.P. and Kumar, R. and Bhowmik, R.K. and Ghugre, S.S. and Singh, A.K. and Kumar, V. and Amita and Nuclear Science Centre, P.O. Box 10502, New Delhi 110 067 and Inter-University Consortium for DAE Facilities, Calcutta 700 091 and Department of Physics and Meteorology, IIT Kharagpur, Kharagpur 721 302 and Department of Physics, Panjab University, Chandigarh 160 014 and Department of Physics, RBS College, Agra 282 002},
abstractNote = {A systematic investigation of the shears mechanism in silver isotopes has been carried out. Lifetimes have been measured by means of the Doppler-shift attenuation method for states in two magnetic dipole (M1) bands in {sup 105}Ag and one each in {sup 103}Ag and {sup 106}Ag. Experimental total angular momenta and reduced transition strengths for these bands have been compared with the predictions of the tilted axis cranking (TAC) model with configurations involving one g{sub 9/2} proton and quasineutrons from the h{sub 11/2} and g{sub 7/2} or d{sub 5/2} orbitals. There is good overall agreement for both the total angular momenta and reduced transition strengths. The deduced B(M1) strengths, which are a sensitive probe of magnetic rotation, show a decrease consistent with TAC predictions for one M1 band in {sup 105}Ag and in {sup 106}Ag, confirming the shears mechanism as the means of excitation. Furthermore, the staggering in the transition energies in {sup 103}Ag and absence of regular sequences of M1 transitions for N{<=}56 suggest that N=56 is the lower boundary for the appearance of the shears mechanism in this mass region.},
doi = {10.1103/PhysRevC.73.034313},
journal = {Physical Review. C, Nuclear Physics},
number = 3,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}