Theoretical model for calculation of molecular stopping power
A modified local plasma model based on the work of Linhard-Winther, Bethe, Brown, and Walske is established. The Gordon-Kim's molecular charged density model is employed to obtain a formula to evaluate the stopping power of many useful molecular systems. The stopping power of H/sub 2/ and He gas was calculated for incident proton energy ranging from 100 KeV to 2.5 MeV. The stopping power of O/sub 2/, N/sub 2/, and water vapor was also calculated for incident proton energy ranging from 40 keV to 2.5 MeV. Good agreement with experimental data was obtained. A discussion of molecular effects leading to departure from Bragg's rule is presented. The equipartition rule and the effect of nuclear momentum recoiling in stopping power are also discussed in the appendix. The calculation procedure presented hopefully can easily be extended to include the most useful organic systems such as the molecules composed of carbon, nitrogen, hydrogen and oxygen which are useful in radiation protection field.
- Research Organization:
- Old Dominion Univ., Norfolk, VA (USA)
- OSTI ID:
- 5884712
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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Low-energy proton stopping power of N2, O2 and water vapor and deviations from Bragg's rule
Theoretical model for calculation of molecular stopping power
Related Subjects
HELIUM
CHARGED-PARTICLE TRANSPORT
STOPPING POWER
HYDROGEN
MOLECULES
NITROGEN
OXYGEN
PROTONS
ENERGY LOSSES
WATER VAPOR
ABSORPTION
CALCULATION METHODS
KEV RANGE 10-100
KEV RANGE 100-1000
MEV RANGE 01-10
BARYONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
FLUIDS
GASES
HADRONS
KEV RANGE
LOSSES
MEV RANGE
NONMETALS
NUCLEONS
RADIATION TRANSPORT
RARE GASES
VAPORS
654001* - Radiation & Shielding Physics- Radiation Physics
Shielding Calculations & Experiments