Absolute cross section of p(Be-7,gamma)B-8 using a novel approach

Citation
L. Gialanella et al., Absolute cross section of p(Be-7,gamma)B-8 using a novel approach, EUR PHY J A, 7(3), 2000, pp. 303-305
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL A
ISSN journal
1434-6001 → ACNP
Volume
7
Issue
3
Year of publication
2000
Pages
303 - 305
Database
ISI
SICI code
1434-6001(200003)7:3<303:ACSOPU>2.0.ZU;2-B
Abstract
The absolute cross section sigma(E) of the radiative capture reaction p(Be- 7,gamma)B-8 at the center-of mass energy E = 992 keV has been measured usin g a radioactive 7Be ion beam and a windowless gas target system filled with H-2 gas. The B-8 residual nuclides were detected with a recoil separator c onsisting of momentum and velocity filters and a BE E detector telescope. T he B-8 yield was observed concurrently with the Be-7+p elastic scattering y ield, relating sigma(E) to the Rutherford scattering cross section. The res ulting value, sigma(E) = 0.41+/-0.11 mu b, leads to an S(E) factor at zero energy of S(0) = 16+/-4 eV b, in fair agreement with recommended values.