Proton radius of 14Be from measurement of charge-changing cross sections
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS(2014)
摘要
The charge-changing cross sections of Be-7,Be-9-12,Be-14 have been measured at 900A MeV on a carbon target. These cross sections are discussed both in terms of a geometrical and a Glauber model. From several different analyses of the cross sections, the proton distribution radius (proton radius) of Be-14 is determined for the first time to be 2.41 +/- 0.04 fm. A large difference in the proton and neutron radii is found. The proton radii are compared to the results of fermionic molecular dynamics (FMD) and antisymmetrized molecular dynamics (AMD) calculations.
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关键词
nuclear physics
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