CUED Publications database

Status of vibrational structure in Ni62

Chakraborty, A and Orce, JN and Ashley, SF and Brown, BA and Crider, BP and Elhami, E and McEllistrem, MT and Mukhopadhyay, S and Peters, EE and Singh, B and Yates, SW (2011) Status of vibrational structure in Ni62. Physical Review C - Nuclear Physics, 83. ISSN 0556-2813

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Abstract

Measurements consisting of γ-ray excitation functions and angular distributions were performed using the (n,n ′ γ) reaction on Ni62. The excitation function data allowed us to check the consistency of the placement of transitions in the level scheme. From γ-ray angular distributions, the lifetimes of levels up to ~3.8 MeV in excitation energy were extracted with the Doppler-shift attenuation method. The experimentally deduced values of reduced transition probabilities were compared with the predictions of the quadrupole vibrator model and with large-scale shell model calculations in the fp shell configuration space. Two-phonon states were found to exist with some notable deviation from the predictions of the quadrupole vibrator model, but no evidence for the existence of three-phonon states could be established. Z=28 proton core excitations played a major role in understanding the observed structure. © 2011 American Physical Society.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div A > Energy
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:30
Last Modified: 03 Aug 2017 03:02
DOI: