The Energy Loss of Li and C Ions with MeV Energies in the Polycarbonate and Polypropylene

Journal Article · Tue Dec 13 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3665304· OSTI ID:22003903

Miksova, R; Mackova, A ^[1]; Hnatowicz, V ^[1]

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1. Nuclear Physics Institute, Academy of Sciences of the Czech Republic, 25068 Rez (Czech Republic)

Stopping power and straggling of Li ions and C ions at mean energy 3.8-5.4 MeV and 5.6-6.9 MeV, respectively, in polycarbonate (PC) and at mean energy 3.7-5.2 MeV and 6.8-8.0 MeV in polypropylene (PP) foils have been measured using ion beams from a Tandetron 4130 MC accelerator. The ions scattered from a thin, primary gold target were registered by a surface barrier detector partially covered with a thin foil of the investigated polymer. The stopping power was determined from the energy difference between the signals from the ions directly backscattered from the Au layer and the ions backscattered and slowed down in the foil. The foil thickness was determined by the weighing procedure. The experimentally determined stopping powers were compared with those calculated with the SRIM 2010 code. The measured stopping powers are in good agreement for Li and C in PC, the differences being within 0.1-1.6% for Li and 0.2-2.1% for C. For Li and C in PP, the stopping powers are lower than the calculated ones, the differences being within 0.5-2.8% for Li and 3.6-6.1% for C. The energy straggling was determined from the width of the RBS signals. The experimentally determined energy straggling was found to fluctuate around the values calculated according to Bohr theory.

• OSTI ID: 22003903
• Journal Information: AIP Conference Proceedings, Vol. 1412, Issue 1; Conference: 11. international conference on applications of nuclear techniques, Crete (Greece), 12-18 Jun 2011; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
36 MATERIALS SCIENCE
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOHR THEORY
CARBON IONS
DATA ANALYSIS
ENERGY LOSSES
FOILS
GOLD
ION BEAMS
LAYERS
LITHIUM IONS
MEV RANGE
POLYCARBONATES
POLYPROPYLENE
RUTHERFORD BACKSCATTERING SPECTROSCOPY
STOPPING POWER
STRAGGLING
SURFACE BARRIER DETECTORS