PROTONS FROM SEVERAL ELEMENTS BOMBARDED WITH 30-Mev ALPHA PARTICLES

Journal Article · Mon Oct 01 04:00:00 EDT 1962 · J. Phys. Soc. Japan

DOI:https://doi.org/10.1143/JPSJ.17.1526· OSTI ID:4755910

Tomita, S; Yamaki, T; Yamada, Y

Thin targets of Al, Cu, Ag, and Au were bombarded with the 30-Mev alpha particles and the energy distributions of protons were measured at angular intervals of 10 or 15 deg . From an analysis of the energy distributions, the angular distributions for each 2-Mev energy interval were obtained. General behaviors of the angular distributions are as follows. (1) The cross-section increases smoothly from back to forward angles. (2) The forward peaking of the cross-section is greater at low excitation energy of the residual nucleus than at high excitation energy. (3) The forward peaking is more pronounced for heavy elements than for light ones except for Au. From an analysis of the energy distributions at 135 deg in laboratory system, the relative level densities of the residual nuclei were obtained as a function of the excitation energy of the residual nucleus. The curves on semiog plots of the level densities show the parabolic behavior which is predicted by the level density formula coming from the Fermi gas. (auth)

• Research Organization: Kyoto Univ.
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-005339
• OSTI ID: 4755910
• Journal Information: J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 17
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALPHA BEAMS
ALUMINUM
ANGULAR DISTRIBUTION
COPPER
CROSS SECTIONS
DENSITY
ELEMENTS
ENERGY
ENERGY LEVELS
FERMI GAS
FERMIONS
GOLD
LEVELS
MEASURED VALUES
NUCLEAR MODELS
NUCLEI
PHYSICS
PROTONS
SILVER
TARGETS