Physics Letters B (Dec 2023)
Isospin-dependence of the charge-changing cross-section shaped by the charged-particle evaporation process
- J.W. Zhao,
- B.-H. Sun,
- I. Tanihata,
- S. Terashima,
- A. Prochazka,
- J.Y. Xu,
- L.H. Zhu,
- J. Meng,
- J. Su,
- K.Y. Zhang,
- L.S. Geng,
- L.C. He,
- C.Y. Liu,
- G.S. Li,
- C.G. Lu,
- W.J. Lin,
- W.P. Lin,
- Z. Liu,
- P.P. Ren,
- Z.Y. Sun,
- F. Wang,
- J. Wang,
- M. Wang,
- S.T. Wang,
- X.L. Wei,
- X.D. Xu,
- J.C. Zhang,
- M.X. Zhang,
- X.H. Zhang
Affiliations
- J.W. Zhao
- School of Physics, Beihang University, Beijing, 100191, China; State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing, 100871, China; GSI Helmholtzcentre for Heavy Ion Research GmbH, Darmstadt, 64291, Germany
- B.-H. Sun
- School of Physics, Beihang University, Beijing, 100191, China; Corresponding author.
- I. Tanihata
- School of Physics, Beihang University, Beijing, 100191, China; RCNP, Osaka University, Ibaraki Osaka 567-0047, Japan
- S. Terashima
- School of Physics, Beihang University, Beijing, 100191, China
- A. Prochazka
- Medaustron, 2700 Wiener Neustadt, Austria
- J.Y. Xu
- School of Physics, Beihang University, Beijing, 100191, China
- L.H. Zhu
- School of Physics, Beihang University, Beijing, 100191, China
- J. Meng
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing, 100871, China
- J. Su
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, China
- K.Y. Zhang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing, 100871, China; Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan, 621900, China
- L.S. Geng
- School of Physics, Beihang University, Beijing, 100191, China
- L.C. He
- School of Physics, Beihang University, Beijing, 100191, China
- C.Y. Liu
- School of Physics, Beihang University, Beijing, 100191, China
- G.S. Li
- School of Physics, Beihang University, Beijing, 100191, China
- C.G. Lu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- W.J. Lin
- School of Physics, Beihang University, Beijing, 100191, China
- W.P. Lin
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, China
- Z. Liu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
- P.P. Ren
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, China
- Z.Y. Sun
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- F. Wang
- School of Physics, Beihang University, Beijing, 100191, China
- J. Wang
- School of Physics, Beihang University, Beijing, 100191, China
- M. Wang
- School of Physics, Beihang University, Beijing, 100191, China
- S.T. Wang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- X.L. Wei
- School of Physics, Beihang University, Beijing, 100191, China
- X.D. Xu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- J.C. Zhang
- School of Physics, Beihang University, Beijing, 100191, China
- M.X. Zhang
- School of Physics, Beihang University, Beijing, 100191, China
- X.H. Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- Journal volume & issue
-
Vol. 847
p. 138269
Abstract
We present the charge-changing cross sections (CCCS) of 11−15C, 13−17N, and 15,17−18O at around 300 MeV/nucleon on a carbon target, which extends to p-shell isotopes with N<Z for the first time. The Glauber model, which considers only the proton distribution of projectile nuclei, underestimates the cross sections by more than 10%. We show that this discrepancy can be resolved by considering the contribution from the charged-particle evaporation process (CPEP) following projectile neutron removal. Using nucleon densities from the deformed relativistic Hartree-Bogoliubov theory in continuum, we investigate the isospin-dependent CPEP contribution to the CCCS for a wide range of neutron-to-proton separation energy asymmetry. Our calculations, which include the CPEP contribution, agree well with existing systematic data and reveal an “evaporation peak” at the isospin symmetric region where the neutron-to-proton separation energy is close to zero. These results suggest that analysis beyond the Glauber model is crucial for accurately determining nuclear charge radii from CCCSs.
