학술논문
Accurate simultaneous lead stopping power and charge-state measurements in gases and solids: Benchmark data for basic atomic theory and nuclear applications
Document Type
article
Author
S. Ishikawa; H. Geissel; S. Purushothaman; H. Weick; E. Haettner; N. Iwasa; C. Scheidenberger; A.H. Sørensen; Y.K. Tanaka; T. Abel; J. Äystö; S. Bagchi; T. Dickel; V. Drozd; B. Franczak; F. Greiner; M.N. Harakeh; N. Kalantar-Nayestanaki; B. Kindler; R. Knöbel; D. Kostyleva; S. Kraft-Bermuth; N. Kuzminchuk; E. Lamour; B. Lommel; I. Mukha; Z. Patyk; S. Pietri; G. Schaumann; J. Zhao
Source
Physics Letters B, Vol 846, Iss , Pp 138220- (2023)
Subject
Language
English
ISSN
0370-2693
Abstract
We have measured for the first time simultaneously both the mean charge states and stopping powers of (35–280) MeV/u 208Pb ions in gases and solids with an accuracy of 1%. The existence at lower energies and disappearance at higher of density effects in the charge-state distribution and the corresponding stopping power are directly confirmed and comparisons with widely used theories and simulations for heavy ions demonstrate strong deviations of up to 27%. However, an unprecedented prediction power of better than 3% has been achieved for the energy loss when the measured mean charge-states are implemented in the Lindhard-Sørensen theory. Our present benchmark data contribute to an improved understanding of the basic atomic collision processes and to numerous applications in nuclear physics. Extending the GANIL data [1] to higher accuracy and energies, we can now answer at which velocities the Bohr-Lindhard density effect in stopping will vanish.