Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2011-10-10
Physics of Atomic Nuclei, 2010, Vol. 73, No. 11, pp. 1942-1947
Physics
Nuclear Physics
Nuclear Experiment
ISSN 1063-7788
Scientific paper
10.1134/S1063778810110177
In a track nuclear photoemulsion exposed to a beamof $^7$Li nuclei accelerated to a momentum of 3 GeV/$c$ per nucleon at the synchrophasotron of the Joint Institute for Nuclear Research (JINR, Dubna), 13 events in which $^7$Li nuclei interacting with protons break up into $^3$H and $^4$He fragments were detected among 3730 inelastic-interaction events. For this fragmentation channel, the cross section was found to be $8\pm2$ mb. The average value of the fragment total transverse momentum was $214\pm5$ MeV/$c$. This value exceedsmarkedly the average value of the transverse-momentumtransfer in the coherent dissociation of $^7$Li nuclei on track-emulsion nuclei ($166\pm5$ MeV/$c$). The recoil-proton transverse momentum was on average 98% of the total proton momentum. The longitudinal-momentum distribution of protons was characterized by a variance of 16 MeV/$c$ and a mean value of $37\pm2$ MeV/$c$.
Alexandrov Yu. A.
Dronov V. A.
Fetisov V. N.
Gerasimov S. G.
Kharlamov S. P.
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