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Small-angle proton elastic scattering from the neutron-rich isotopes 6He and 8He, and from 4He, at 0.7 GeV in inverse kinematics.
- Source :
-
Nuclear Physics A . Dec2002, Vol. 712 Issue 3/4, p247. 22p. - Publication Year :
- 2002
-
Abstract
- Absolute differential cross sections for elastic p 4He, p 6He and p 8He small-angle scattering were measured in inverse kinematics with secondary 4,6,8He-beams at an energy near 0.7 GeV/u. The experiment was performed using beams from the heavy-ion synchrotron SIS and the fragment separator FRS of GSI Darmstadt. The hydrogen-filled ionization chamber IKAR served simultaneously as a gas target and a detector for the recoil protons. Projectile scattering angles were measured with multi-wire tracking detectors. For proton scattering from the neutron-rich isotopes 6He and 8He, differential elastic-scattering cross sections dσ/dt were deduced in the range 0.002 ≤ 0.05 (GeV/c)2 of the four-momentum transfer squared t. For elastic p 4He scattering, the data obtained in the t-range 0.002 ≤ 0.02 (GeV/c)2 supplement the results from an earlier work performed in direct kinematics. From the differential cross sections the integral elastic-scattering cross sections σel, the total cross sections σtot, and the total reaction cross sections σr for the proton–nucleus strong interaction were evaluated. The data obtained on dσ/dt allow the radial matter distributions in the 6He and 8He nuclei to be determined and the corresponding root-mean-square matter radii to be deduced. [Copyright &y& Elsevier]
- Subjects :
- *ELASTIC scattering
*PROTONS
Subjects
Details
- Language :
- English
- ISSN :
- 03759474
- Volume :
- 712
- Issue :
- 3/4
- Database :
- Academic Search Index
- Journal :
- Nuclear Physics A
- Publication Type :
- Academic Journal
- Accession number :
- 7788869
- Full Text :
- https://doi.org/10.1016/S0375-9474(02)01274-5