NUCLEAR ABSORPTION CROSS SECTIONS FOR $gamma$ RADIATION BETWEEN 10 AND 30 Mev (in German)
The bremsstrahlung spectra of a 32-Mev betatron were measured with a pair spectrometer. The light intemsity of the spectrometers permitted the measurement of the spectra behind dense absorbers of Au, Cu, Al, H/sub 2/0, and C. The curve obtained contained characteristic indentations in the values of the quanta energy, which corresponds to the gigantic resonance'' of the atomic nucleus. The curve without absorber was multiplied by the known data for absorption by the Compton effect and pair formation and caused to coincide with the absorber curve beyond the gigantic resonance. The nuclear absorption cross section found agrees, within the measuring errors, with known values for carbon. For carbon, an integrated value of 30 plus or minus 10 Mev mb was found. This is approximately 1/3 of the values added from the (j gamma ,n) and ( gamma ,p) measurements. (tr-auth)
- Research Organization:
- Technische Hochschule Karlsruhe, Ger.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-13-001735
- OSTI ID:
- 4297719
- Journal Information:
- Z. Physik, Journal Name: Z. Physik Vol. Vol: 152
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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