Stopping powers of gases for 40 MeV/u tellurium ions

被引：4

作者：

Bimbot, R

Khoumri, A

Fahli, A

Barbey, S

Benfoughal, T

Mirea, M

Hachem, A

Fares, G

Anne, R

Delagrange, H

Tribouillard, C

Georget, Y

Foy, JC

机构：

[1] Inst Phys Nucl, CNRS, IN2P3, F-91406 Orsay, France

[2] Fac Sci Ben Msik, LPIRI, Casablanca, Morocco

[3] Univ Nice, Lab Radiochim, F-06034 Nice, France

[4] GANIL, F-14076 Caen, France

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2000年 / 170卷 / 3-4期

关键词：

slowing down; heavy ions; tellurium ions; 40; MeV/nucleon; measured stopping powers; gaseous degraders; gas-solid effect; effective-charge parametrization;

D O I：

10.1016/S0168-583X(00)00258-5

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The stopping powers of six gaseous media have been measured for incident 40 MeV/u Te-125 heavy ions. The energy losses of ions in various "thicknesses" of gas have been accurately determined. The gases were confined in a cell. The amount of matter traversed by the ions was determined from temperature and pressure measurements. The beam energy before and after slowing down were measured using the LISE magnetic spectrometer at GANIL. These experimental gas stopping powers are lower by about 10% than the corresponding tabulated values for solid media. This means that the gas-solid effect is still significant at 40 MeV/u for Te ions. The projectile effective charges derived from these measurements depend on the target atomic number, thus confirming the trend observed in previous experiments performed with lighter ions or at lower energies. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：329 / 335

页数：7

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