Published January 1977 | Version v1
Report Restricted

Small-angle photon scattering on complex nuclei

Creators

Description

Photons of 3 GeV and 5 GeV were scattered on 7 different elements, ranging from Be to Au, and detected with a pair spectrometer. The angular distributions show diffractive patterns consistent with known nuclear sizes. Forward cross sections are 20-30% lower than expected from an A2 dependence. This shadowing effect is qualitatively explained by photon interactions via intermediate hadronic states. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Photonen von 3 GeV und 5 GeV wurden an 7 verschiedenen Elementen - von Be bis Au - gestreut und mit einem Paarspektrometer gemessen. Die Winkelverteilungen zeigen Streumuster, die mit bekannten Kerngroessen konsistent sind. Die Wirkungsquerschnitte fuer Vorwaertstreuung liegen um 20-30% niedriger als nach der A2-Abhaengigkeit anzunehmen war. Dieser Schatteneffekt wird quantitativ mit Photonwechselwirkungen ueber hadronische Zwischenzustaende erklaert. (orig.)

Files

Restricted

The record is publicly accessible, but files are restricted to users with access.

Additional details

Publishing Information

Imprint Pagination
9 p.
Report number
DESY--77/07

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
8323796
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
ALUMINIUM 27; ALUMINIUM 27 TARGET; ANGULAR DISTRIBUTION; BERYLLIUM 9; BERYLLIUM 9 TARGET; CARBON 12; CARBON 12 TARGET; COMPTON EFFECT; COPPER; COPPER 64; DIFFERENTIAL CROSS SECTIONS; DIFFRACTION; GEV RANGE 01-10; GOLD 197; GOLD 197 TARGET; NUCLEAR RADII; PHOTONUCLEAR REACTIONS; SCATTERING AMPLITUDES; SILVER 109; SILVER 109 TARGET; SMALL ANGLE SCATTERING; TITANIUM 49; TITANIUM 49 TARGET; TOTAL CROSS SECTIONS; VECTOR DOMINANCE MODEL
Descriptors DEC
ALUMINIUM ISOTOPES; AMPLITUDES; BASIC INTERACTIONS; BERYLLIUM ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CARBON ISOTOPES; COHERENT SCATTERING; COPPER ISOTOPES; CROSS SECTIONS; DISTRIBUTION; ELASTIC SCATTERING; ELECTROMAGNETIC INTERACTIONS; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTS; ENERGY RANGE; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; GEV RANGE; GOLD ISOTOPES; HEAVY NUCLEI; HOURS LIVING RADIOISOTOPES; INTERACTIONS; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTO; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LIGHT NUCLEI; MATHEMATICAL MODELS; METALS; NUCLEAR PROPERTIES; NUCLEAR REACTIONS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; PARTICLE MODELS; RADIOISOTOPES; SCATTERING; SECONDS LIVING RADIOISOTOPES; SILVER ISOTOPES; STABLE ISOTOPES; TARGETS; TITANIUM ISOTOPES; TRANSITION ELEMENTS

Optional Information

Notes
5 figs.; 3 tabs.; 16 refs.