MEASUREMENT OF THE COULOMB ENERGY-LOSS BY FAST PROTONS IN A PLASMA TARGET

Authors
BELYAEV G BASKO M CHERKASOV A GOLUBEV A FERTMAN A ROUDSKOY I SAVIN S SHARKOV B TURTIKOV V ARZUMANOV A BORISENKO A GORLACHEV I LYSUKHIN S HOFFMANN DHH TAUSCHWITZ A
Citation
G. Belyaev et al., MEASUREMENT OF THE COULOMB ENERGY-LOSS BY FAST PROTONS IN A PLASMA TARGET, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 53(3), 1996, pp. 2701-2707
Citations number
19
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
53
Issue
3
Year of publication
1996
Pages
2701 - 2707
Database
ISI
SICI code
1063-651X(1996)53:3<2701:MOTCEB>2.0.ZU;2-0
Abstract
We report measurements of the energy loss by 1-MeV protons in a plasma target created by electric discharge in the hydrogen gas. Combined wi th independent measurements of the mean ionization degree and the elec tron areal density of the plasma column, based on two-wavelength laser interferometry, the energy-loss data let us infer the value of the Co ulomb logarithm: L(fe) = 14.9+/-2.8 for the stopping power of the free plasma electrons. This value is 3.1+/-0.6 times higher than that give n by the Bethe formula for the neutral hydrogen and, within the experi mental errors, agrees with the theoretical predictions.