Investigation of the structure of light exotic nuclei by proton elastic scattering in inverse kinematics

Journal Article · Fri May 15 04:00:00 EDT 2015 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778815020076· OSTI ID:22472295

Alkhazov, G. D.; Vorobyov, A. A.; Inglessi, A. G.; Korolev, G. A.; Khanzadeev, A. V. ^[1]

---

1. National Research Center Kurchatov Institute, Petersburg Nuclear Physics Institute (Russian Federation)

In order to study the spatial structure of exotic nuclei, it was proposed at the Petersburg Nuclear Physics Institute (PNPI) to measure the differential cross section for small-angle proton elastic scattering in inverse kinematics. Several experiments in beams of 0.7-GeV/nucleon exotic nuclei were performed at the heavy-ion accelerator facility of GSI (Gesellschaft für Schwerionenforschung, Darmstadt, Germany) by using the IKAR ionization spectrometer developed at PNPI. The IKAR ionization chamber filled with hydrogen at a pressure of 10 bar served simultaneously as a target and as a recoil-proton detector, which measured the recoil-proton energy. The beam-particle scattering angle was also measured. The results obtained for the cross sections in question were analyzed on the basis of the Glauber-Sitenko theory using phenomenological nuclear-density distributions with two free parameters. Nuclear-matter distributions and root-mean-square radii were found for the nuclei under investigation. The size of the halo in the {sup 6}He, {sup 8}He, {sup 11}Li, and {sup 14}Be nuclei was determined among other things. Information about neutron distributions in nuclei was deduced by combining the data obtained here with the known values of the radii of proton distributions. A sizable neutron skin was revealed in the {sup 8}Li, {sup 9}Li, and {sup 12}Be nuclei.

• OSTI ID: 22472295
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 3 Vol. 78; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BERYLLIUM 12
BERYLLIUM 14
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
GEV RANGE
GLAUBER THEORY
HELIUM 6
HELIUM 8
LITHIUM 11
LITHIUM 8
LITHIUM 9
NEUTRONS
NUCLEAR HALOS
NUCLEAR MATTER
NUCLEAR STRUCTURE
PROTON REACTIONS