Measurements of the interaction cross sections for Ar and Cl isotopes

被引：67

作者：

Ozawa, A

Baumann, T

Chulkov, L

Cortina, D

Datta, U

Fernandez, J

Geissel, H

Hammache, F

Itahashi, K

Ivanov, M

Janik, R

Kato, T

Kimura, K

Kobayashi, T

Markenroth, K

Meister, M

Münzenberg, G

Ohtsubo, T

Ohya, S

Okuda, T

Ogloblin, AA

Pribora, V

Sekiguchi, M

Sitár, B

Strmen, P

Sugimoto, S

Sümmerer, K

Suzuki, T

Tanihata, I

Yamaguchi, Y

机构：

[1] RIKEN, Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[2] GSI, D-64291 Darmstadt, Germany

[3] Niigata Univ, Dept Phys, Niigata 9502181, Japan

[4] Kurchatov Inst, Moscow 123182, Russia

[5] Comenius Univ, Fac Math & Phys, Bratislava 84215, Slovakia

[6] Chalmers Univ Technol, Dept Expt Phys, SE-41296 Gothenburg, Sweden

[7] Univ Santiago Compostela, Dept Phys, E-15706 Santiago, Spain

[8] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[9] Nagasaki Inst Appl Sci, Nagasaki 85101, Japan

来源：

NUCLEAR PHYSICS A | 2002年 / 709卷

关键词：

C(Ar31-40; Ar31-40); C((31-37); Cl; Cl31-37); E similar to 950 MeV/nucleon; measured interaction sigma; measured inelastic sigma; Ar31-40 and Cl31-37 deduced effective radii; proton skins for Ar32-40;

D O I：

10.1016/S0375-9474(02)01071-0

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We have measured the interaction cross sections (sigma(I)) of Ar31-40 and Cl31-37 on carbon targets at energies of around 950 A MeV. The effective matter radii for these nuclei were deduced by a Glauber-model analysis. Combining our matter radii with measured charge radii for Ar isotopes, we could deduce the proton-skin thicknesses for the Ar32-40 isotopes, which were found to increase monotonically with decreasing neutron number. The larger radius of the proton drip-line nucleus Ar-31 suggests an anomalous structure for this nucleus. In addition, using NaI(TI) arrays surrounding the carbon target, we measured gamma-rays emitted from excited states in these isotopes. In this way we could deduce the upper limits for the inelastic cross sections (sigma(inela)) on carbon targets at energies of around 950 A MeV.

引用

页码：60 / 72

页数：13

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