Stopping power of carbon for heavy ions upto copper
作者:
Shyam Kumar,
S.K. Sharma,
N. Nath,
V. Harikumar,
A.P. Pathak,
D. Kabiraj,
D.K. Avasthi,
期刊:
Radiation Effects and Defects in Solids
(Taylor Available online 1996)
卷期:
Volume 139,
issue 3
页码: 197-206
ISSN:1042-0150
年代: 1996
DOI:10.1080/10420159608211547
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Stopping powers for ions of O, Cl, Sc, Ti, Cr, Mn, Fe and Cu in the energy range 0.2–1.0 MeV/n have been measured in carbon foils using the elastic recoil ion technique and a twin detector system. Very heavy ions of Gold and Iodine of energy around 100 MeV have been employed to generate the various recoil ions using pure thin (≈ 1000Å) elemental/compound targets. The data have an overall average accuracy of 6%. The stopping power for Sc, Mn and Fe ions in the energy region 0.2–1.0 MeV/n as well as those for Ti and Cu ions in the energy region below 0.45 MeV/n are perhaps the first such measurements. The limitations of LSS theory even within the range of its applicability has been demonstrated. Varelas and Biersack estimates agree well in the region of their applicability lying above the ion velocity limit set for LSS theory. Northcliffe and Schilling predictions as well as the TRIM estimates provide the best fit with data. However, one does notice variations upto 25% for some ions at lower energies in the case of later estimates. Northcliffe and Schilling estimates lie within 10% of the experimental values for all the ions studied except for 0 and Cu ions at certain energies only.
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