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arXiv · 1110.1982

Fragmentation of $^7$Li Relativistic Nuclei on a Proton into the $^3$H+$^4$He Channel

N. G. Peresadko·Yu. A. Alexandrov·S. G. Gerasimov·V. A. Dronov·V. G. Larionova·A. V. Pisetskaya·A. I. Malakhov·E. I. Tamm·V. N. Fetisov·S. P. Kharlamov·L. N. Shesterkina
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Abstract

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/$c$.

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N. G. Peresadko, Yu. A. Alexandrov, S. G. Gerasimov, V. A. Dronov, V. G. Larionova, A. V. Pisetskaya, A. I. Malakhov, E. I. Tamm, V. N. Fetisov, S. P. Kharlamov, L. N. Shesterkina. 2011-10-10. Fragmentation of $^7$Li Relativistic Nuclei on a Proton into the $^3$H+$^4$He Channel. https://doi.org/10.1134/s1063778810110177

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