TOTAL PHOTOABSORPTION CROSS-SECTION FOR HE-4 FROM 200 TO 800 MEV

Authors
MACCORMICK M HABERMANN J AHRENS J AUDIT G BECK R BRAGHIERI A GALLER G DHOSE N ISBERT V PEDRONI P PINELLI T TAMAS G WARTENBERG S ZABRODIN A
Citation
M. Maccormick et al., TOTAL PHOTOABSORPTION CROSS-SECTION FOR HE-4 FROM 200 TO 800 MEV, Physical review. C. Nuclear physics, 55(3), 1997, pp. 1033-1038
Citations number
33
Categorie Soggetti
Physics, Nuclear
Journal title
Physical review. C. Nuclear physics → ACNP
ISSN journal
05562813
Volume
55
Issue
3
Year of publication
1997
Pages
1033 - 1038
Database
ISI
SICI code
0556-2813(1997)55:3<1033:TPCFHF>2.0.ZU;2-L
Abstract
The total photoabsorption cross section for He-4 has been measured for -the first time over a wide photon energy range (200 MeV less than or equal to E(gamma)less than or equal to 800 MeV). By using the large ac ceptance detector DAPHNE at the tagged photon facility of the MAMI mic rotron in Mainz high precision results with small systematic errors we re obtained. This measurement shows that He-4 has a behavior similar t o heavy nuclei and, in particular, a reduction of the cross section wi th respect to the lighter nuclei is found for E(gamma)>600 MeV.