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Title: Self-consistent approach to beta decay and delayed neutron emission

Abstract

A brief overview of the recent self-consistent studies of nuclear beta decay is given including the relativistic quasi-particle random-phase approximation or QRPA and Finite Amplitude Method. The results of our self-consistent continuum QRPA model based on the density functional description of the ground states are presented. They are in a good agreement with the recent experimental beta-decay half-lives and delayed neutron emission branchings for the nuclei approaching (and beyond) the neutron closed shells N = 50 near {sup 78}Ni and N = 82 near {sup 132}Sn. A comparison with the recent calculations from relativistic QRPA model, Finite Amplitude Method and semi-microscopic finite-range droplet model is performed. An importance of the quasi-particle phonon coupling is stressed for the description of the beta decay and delayed multi-neutron emission rates. A strategy of extending our approach to the deformed nuclei and the open problems are discussed.

Authors:
 [1]
  1. National Research Centre “Kurchatov Institute,” (Russian Federation)
Publication Date:
OSTI Identifier:
22612589
Resource Type:
Journal Article
Journal Name:
Physics of Atomic Nuclei
Additional Journal Information:
Journal Volume: 79; Journal Issue: 6; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7788
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; AMPLITUDES; BETA DECAY; BRANCHING RATIO; DEFORMED NUCLEI; DELAYED NEUTRONS; DENSITY FUNCTIONAL METHOD; DROPLET MODEL; GROUND STATES; HALF-LIFE; NEUTRON EMISSION; NICKEL 78; PHONONS; RANDOM PHASE APPROXIMATION; RELATIVISTIC RANGE; TIN 132

Citation Formats

Borzov, I. N., E-mail: ibor48@mail.ru. Self-consistent approach to beta decay and delayed neutron emission. United States: N. p., 2016. Web. doi:10.1134/S1063778816060041.
Borzov, I. N., E-mail: ibor48@mail.ru. Self-consistent approach to beta decay and delayed neutron emission. United States. https://doi.org/10.1134/S1063778816060041
Borzov, I. N., E-mail: ibor48@mail.ru. 2016. "Self-consistent approach to beta decay and delayed neutron emission". United States. https://doi.org/10.1134/S1063778816060041.
@article{osti_22612589,
title = {Self-consistent approach to beta decay and delayed neutron emission},
author = {Borzov, I. N., E-mail: ibor48@mail.ru},
abstractNote = {A brief overview of the recent self-consistent studies of nuclear beta decay is given including the relativistic quasi-particle random-phase approximation or QRPA and Finite Amplitude Method. The results of our self-consistent continuum QRPA model based on the density functional description of the ground states are presented. They are in a good agreement with the recent experimental beta-decay half-lives and delayed neutron emission branchings for the nuclei approaching (and beyond) the neutron closed shells N = 50 near {sup 78}Ni and N = 82 near {sup 132}Sn. A comparison with the recent calculations from relativistic QRPA model, Finite Amplitude Method and semi-microscopic finite-range droplet model is performed. An importance of the quasi-particle phonon coupling is stressed for the description of the beta decay and delayed multi-neutron emission rates. A strategy of extending our approach to the deformed nuclei and the open problems are discussed.},
doi = {10.1134/S1063778816060041},
url = {https://www.osti.gov/biblio/22612589}, journal = {Physics of Atomic Nuclei},
issn = {1063-7788},
number = 6,
volume = 79,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2016},
month = {Tue Nov 15 00:00:00 EST 2016}
}