Barkas effect for antiproton stopping in H2.

作者信息

Lodi Rizzini E, Bianconi A, Bussa M P, Corradini M, Donzella A, Venturelli L, Bargiotti M, Bertin A, Bruschi M, Capponi M, De Castro S, Fabbri L, Faccioli P, Galli D, Giacobbe B, Marconi U, Massa I, Piccinini M, Poli M, Semprini Cesari N, Spighi R, Vagnoni V, Vecchi S, Villa M, Vitale A, Zoccoli A, Gorchakov O E, Pontecorvo G B, Rozhdestvensky A M, Tretyak V I, Guaraldo C, Petrascu C, Balestra F, Busso L, Denisov O Y, Ferrero L, Garfagnini R, Grasso A, Maggiora A, Piragino G, Tosello F, Zosi G, Margagliotti G, Santi L, Tessaro S

机构信息

Dipartimento di Chimica e Fisica per l'Ingegneria e per i Materiali, Università di Brescia, Brescia and INFN, gruppo di Brescia, Brescia, Italy.

出版信息

Phys Rev Lett. 2002 Oct 28;89(18):183201. doi: 10.1103/PhysRevLett.89.183201. Epub 2002 Oct 10.

DOI:10.1103/PhysRevLett.89.183201

PMID:12398596

Abstract

We report the stopping power of molecular hydrogen for antiprotons of kinetic energy above the maximum (approximately 100 keV) with the purpose of comparing with the proton one. Our result is consistent with a positive difference in antiproton-proton stopping powers above approximately 250 keV and with a maximum difference between the stopping powers of 21%+/-3% at around 600 keV.

摘要