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Title: Nucleon and nucleon-pair momentum distributions in A 12 nuclei

Abstract

Background: Momentum distributions of individual nucleons and nucleon pairs reflect features of the short-range structure of nuclei and provide useful insights into various reactions on nuclei, such as ( e , e ' p ) and ( e , e ' p p / p n ) electrodisintegration processes or neutrino-nucleus interaction experiments. Purpose: To provide the nuclear physics community with the results (available online) of a systematic study of single-nucleon momentum distributions and nucleon-pair and nucleon-cluster momentum distributions for A ≤ 12 nuclei. Method: The realistic Argonne v 18 two-nucleon and Urbana X three-nucleon potentials are used to generate accurate variational Monte Carlo wave functions for the A ≤ 12 nuclei; quantum Monte Carlo methods are used to calculate the momentum distributions. Results: Single-nucleon distributions are given, broken down into proton and neutron components and spin-up and spin-down components where appropriate. Nucleon-pair momentum distributions are given either in pair spin and isospin ST projection or for p p , p n , and n n pairs. Nucleon-cluster momentum distributions include d p in 3 He, t p and d d in 4 He, α d in 6 Li, α t in 7 Li, and α α in 8 Be.more » Conclusions: The momentum distributions exhibit common characteristic shapes, with tensor correlations (or lack thereof) playing a dominant role in the 1.5–3 fm - 1 range, while spin-isospin correlations dominate at higher momenta.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1395166
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 89; Journal Issue: 2; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Wiringa, R. B., Schiavilla, R., Pieper, Steven C., and Carlson, J. Nucleon and nucleon-pair momentum distributions in A≤12 nuclei. United States: N. p., 2014. Web. doi:10.1103/PhysRevC.89.024305.
Wiringa, R. B., Schiavilla, R., Pieper, Steven C., & Carlson, J. Nucleon and nucleon-pair momentum distributions in A≤12 nuclei. United States. doi:10.1103/PhysRevC.89.024305.
Wiringa, R. B., Schiavilla, R., Pieper, Steven C., and Carlson, J. Sat . "Nucleon and nucleon-pair momentum distributions in A≤12 nuclei". United States. doi:10.1103/PhysRevC.89.024305.
@article{osti_1395166,
title = {Nucleon and nucleon-pair momentum distributions in A≤12 nuclei},
author = {Wiringa, R. B. and Schiavilla, R. and Pieper, Steven C. and Carlson, J.},
abstractNote = {Background: Momentum distributions of individual nucleons and nucleon pairs reflect features of the short-range structure of nuclei and provide useful insights into various reactions on nuclei, such as ( e , e ' p ) and ( e , e ' p p / p n ) electrodisintegration processes or neutrino-nucleus interaction experiments. Purpose: To provide the nuclear physics community with the results (available online) of a systematic study of single-nucleon momentum distributions and nucleon-pair and nucleon-cluster momentum distributions for A ≤ 12 nuclei. Method: The realistic Argonne v 18 two-nucleon and Urbana X three-nucleon potentials are used to generate accurate variational Monte Carlo wave functions for the A ≤ 12 nuclei; quantum Monte Carlo methods are used to calculate the momentum distributions. Results: Single-nucleon distributions are given, broken down into proton and neutron components and spin-up and spin-down components where appropriate. Nucleon-pair momentum distributions are given either in pair spin and isospin ST projection or for p p , p n , and n n pairs. Nucleon-cluster momentum distributions include d p in 3 He, t p and d d in 4 He, α d in 6 Li, α t in 7 Li, and α α in 8 Be. Conclusions: The momentum distributions exhibit common characteristic shapes, with tensor correlations (or lack thereof) playing a dominant role in the 1.5–3 fm - 1 range, while spin-isospin correlations dominate at higher momenta.},
doi = {10.1103/PhysRevC.89.024305},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 2,
volume = 89,
place = {United States},
year = {2014},
month = {2}
}

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