TOTAL ABSORPTIONOF $gamma$ RADIATION BETWEEN 10 AND 30 Mev IN LIGHT NUCLEI

Journal Article · Wed Jun 01 04:00:00 EDT 1960 · Nuclear Phys.

DOI:https://doi.org/10.1016/0029-5582(60)90118-8· OSTI ID:4144297

Ziegler, B

Absorption cross sections in carbon, oxygen, and aluminum were determined with a 32 Mev betatron and a magnetic pair spectrometer in the energy interval between 10 and 30 Mev. In this region, where the nuclear absorption is unimportant, the measured total electronic absorption cross section agrees within 1% with the theoretical value based on the theories of Klein and Nishina for the Compton effect, of Bethe and Heitler for the pair prcduction in the field of the nucleus, and of Borsellino for the pair production in the field of the electron. The total nuclear absorption shows the giant resonance peak well known in photonuclear reactions. The peak cross section was found to be 18 mb at 22.5 Mev for carbon and 50 mb at 20 Mev for alumin um. The oxygen and aluminum data suggest a smoothly varying nuclear absorption cross section. (auth)

• Research Organization: Technische Hochschule, Karlsruhe, Ger.; Max-Planck-Instituts fur Chemie, Mainz
• NSA Number: NSA-14-018465
• OSTI ID: 4144297
• Journal Information: Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 17
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

ABSORPTION
ALUMINUM
BETATRONS
BETHE-HEITLER THEORY
CARBON
COMPTON EFFECT
CROSS SECTIONS
ELECTRIC FIELDS
ELECTROMAGNETISM
ELECTRONS
ENERGY LEVELS
EQUATIONS
GAMMA RADIATION
GAMMA SPECTROMETERS
GIANT RESONANCE
KLEIN-NISHINA FORMULA
MAGNETIC FIELDS
MATHEMATICS
MEASURED VALUES
MEV RANGE
NUCLEAR REACTIONS
NUCLEI
OXYGEN
PAIR PRODUCTION
PHOTONS
PHYSICS
RESONANCE