skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Two-proton knockout from {sup 32}Mg: Intruder amplitudes in {sup 30}Ne and implications for the binding of {sup 29,31}F

Abstract

gamma-ray decays from excited states in {sup 30}Ne and inclusive and exclusive cross sections were measured in the {sup 9}Be({sup 32}Mg,{sup 30}Ne+gamma)X two-proton knockout reaction at incident beam energies of 99.7 and 86.7 MeV/nucleon. The measured cross section is suppressed compared to calculations and is indicative of a reduced overlap of initial and final state wave functions in {sup 32}Mg and {sup 30}Ne. We interpret this reduction as due to large 4p4h amplitudes present in the {sup 30}Ne ground state wave function, but not {sup 32}Mg. Such large intruder components are predicted to help stabilize the heavier fluorine isotopes against neutron emission.

Authors:
; ; ; ; ;  [1];  [1]; ; ; ; ; ; ; ; ; ; ; ;  [2];  [3]
  1. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  2. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
  3. Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH (United Kingdom)
Publication Date:
OSTI Identifier:
21388898
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 81; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevC.81.041302; (c) 2010 The American Physical Society; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; AMPLITUDES; BEAMS; BERYLLIUM 9 TARGET; CROSS SECTIONS; EXCITED STATES; FLUORINE 29; FLUORINE 31; GAMMA DECAY; GAMMA RADIATION; GROUND STATES; KNOCK-OUT REACTIONS; MAGNESIUM 32; MEV RANGE 10-100; NEON 30; NEUTRON EMISSION; NUCLEAR DECAY; PROTONS; SIMULATION; WAVE FUNCTIONS; ALKALINE EARTH ISOTOPES; BARYONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DECAY; DIRECT REACTIONS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; EMISSION; ENERGY LEVELS; ENERGY RANGE; EVEN-EVEN NUCLEI; FERMIONS; FLUORINE ISOTOPES; FUNCTIONS; HADRONS; IONIZING RADIATIONS; ISOTOPES; LIGHT NUCLEI; MAGNESIUM ISOTOPES; MEV RANGE; NANOSECONDS LIVING RADIOISOTOPES; NEON ISOTOPES; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; ODD-EVEN NUCLEI; RADIATIONS; RADIOISOTOPES; TARGETS

Citation Formats

Fallon, P, Macchiavelli, A O, Clark, R M, Cromaz, M, Lee, I Y, Wiedeking, M, Rodriguez-Vieitez, E, Department of Nuclear Engineering, University of California, Berkeley, California 94720, Gade, A, Bowen, M, Campbell, C M, Cook, J M, Dinca, D C, Glasmacher, T, McDaniel, S, Ratkiewicz, A, Siwek, K, Terry, J R, Yoneda, K, Brown, B A, Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, and Tostevin, J A. Two-proton knockout from {sup 32}Mg: Intruder amplitudes in {sup 30}Ne and implications for the binding of {sup 29,31}F. United States: N. p., 2010. Web. doi:10.1103/PHYSREVC.81.041302.
Fallon, P, Macchiavelli, A O, Clark, R M, Cromaz, M, Lee, I Y, Wiedeking, M, Rodriguez-Vieitez, E, Department of Nuclear Engineering, University of California, Berkeley, California 94720, Gade, A, Bowen, M, Campbell, C M, Cook, J M, Dinca, D C, Glasmacher, T, McDaniel, S, Ratkiewicz, A, Siwek, K, Terry, J R, Yoneda, K, Brown, B A, Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, & Tostevin, J A. Two-proton knockout from {sup 32}Mg: Intruder amplitudes in {sup 30}Ne and implications for the binding of {sup 29,31}F. United States. https://doi.org/10.1103/PHYSREVC.81.041302
Fallon, P, Macchiavelli, A O, Clark, R M, Cromaz, M, Lee, I Y, Wiedeking, M, Rodriguez-Vieitez, E, Department of Nuclear Engineering, University of California, Berkeley, California 94720, Gade, A, Bowen, M, Campbell, C M, Cook, J M, Dinca, D C, Glasmacher, T, McDaniel, S, Ratkiewicz, A, Siwek, K, Terry, J R, Yoneda, K, Brown, B A, Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, and Tostevin, J A. 2010. "Two-proton knockout from {sup 32}Mg: Intruder amplitudes in {sup 30}Ne and implications for the binding of {sup 29,31}F". United States. https://doi.org/10.1103/PHYSREVC.81.041302.
@article{osti_21388898,
title = {Two-proton knockout from {sup 32}Mg: Intruder amplitudes in {sup 30}Ne and implications for the binding of {sup 29,31}F},
author = {Fallon, P and Macchiavelli, A O and Clark, R M and Cromaz, M and Lee, I Y and Wiedeking, M and Rodriguez-Vieitez, E and Department of Nuclear Engineering, University of California, Berkeley, California 94720 and Gade, A and Bowen, M and Campbell, C M and Cook, J M and Dinca, D C and Glasmacher, T and McDaniel, S and Ratkiewicz, A and Siwek, K and Terry, J R and Yoneda, K and Brown, B A and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 and Tostevin, J A},
abstractNote = {gamma-ray decays from excited states in {sup 30}Ne and inclusive and exclusive cross sections were measured in the {sup 9}Be({sup 32}Mg,{sup 30}Ne+gamma)X two-proton knockout reaction at incident beam energies of 99.7 and 86.7 MeV/nucleon. The measured cross section is suppressed compared to calculations and is indicative of a reduced overlap of initial and final state wave functions in {sup 32}Mg and {sup 30}Ne. We interpret this reduction as due to large 4p4h amplitudes present in the {sup 30}Ne ground state wave function, but not {sup 32}Mg. Such large intruder components are predicted to help stabilize the heavier fluorine isotopes against neutron emission.},
doi = {10.1103/PHYSREVC.81.041302},
url = {https://www.osti.gov/biblio/21388898}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 4,
volume = 81,
place = {United States},
year = {Thu Apr 15 00:00:00 EDT 2010},
month = {Thu Apr 15 00:00:00 EDT 2010}
}