(P)OVER-BAR STOPPING POWER IN HYDROGEN BELOW 1 MEV AND THE (P)OVER-BAR HE-4 METASTABLE STATE

Authors
ADAMO A AGNELLO M BALESTRA F BELLI G BENDISCIOLI G BERTIN A BOCCACCIO P BONAZZOLA GC BRESSANI T BRUSCHI M BUSSA MP BUSSO L CALVO D CAPPONI M CICALO C CORRADINI M COSTA S DECASTRO S DISEP F DONZELLA A FAVA L FELICIELLO A FERRERO L FILIPPINI V GALLI D GARFAGNINI R GASTALDI U GIANOTTI P GRASSO A GUARALDO C IAZZI F LANARO A RIZZINI EL LOMBARDI M LUCHERINI V MAGGIORA A MARCELLO S MARCONI U MARGAGLIOTTI GV MARON G MASONI A MASSA I MINETTI B MORANDO M MONTAGNA P NICHITIU F PANZIERI M PAULI G PICCININI M PIRAGINO G POLI M PUDDU G RICCI RA RIZZO C ROSSETTO E ROTONDI A ROZHDESTVENSKY AM SALVINI P SANTI L SAPOZHNIKOV MG CESARI NS SERCI S TEMNIKOV P TESSARO S TOSELLO F TRETYAK VI USAI GL VANNUCCI L VECCHI S VEDOVATO G VENTURELLI L VILLA M VITALE A ZAVATTINI E ZENONI A ZOCCOLI A ZOSI G
Citation
A. Adamo et al., (P)OVER-BAR STOPPING POWER IN HYDROGEN BELOW 1 MEV AND THE (P)OVER-BAR HE-4 METASTABLE STATE, Nuclear physics. A, 558, 1993, pp. 30000665-30000678
Citations number
17
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. A → ACNP
ISSN journal
03759474
Volume
558
Year of publication
1993
Pages
30000665 - 30000678
Database
ISI
SICI code
0375-9474(1993)558:<30000665:(SPIHB>2.0.ZU;2-9
Abstract
The stopping power of H-2 for psBAR was measured in the pBAR energy in terval 1 keV divided-by 120 keV using a low density gas target (rho/rh o(o) = 10(-3) divided-by 10(-2), rho(o) being the H2 density at STP) w ith the OBELIX spectrometer at the LEAR of CERN. Furthermore, the form ation of metastable states in the pBAR He-4 interaction at rest, havin g a mean life of the order of 3 mus, was investigated at six target ga s pressures (3 atm and 400, 250, 200, 150, 50 mbar). The influence of contaminants (like H-2, Ne, Ar, N2 and Xe) on the life of such metasta ble states was examined at the target gas pressure of 3 atm.