Features of the 9Be → 2He fragmentation in an emulsion for an energy of 1.2 GeV per nucleon
D. A. ArtemenkovJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141 980, RussiaV. BradnováJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141 980, RussiaP. I. ZarubinJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141 980, RussiaI. G. ZarubinaJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141 980, RussiaN. A. KachalovaJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141 980, RussiaA. D. KovalenkoJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141 980, RussiaA. I. MalakhovJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141 980, RussiaG. I. OrlovaLebedev Institute of Physics, Russian Academy of Sciences, Leninskiĭ pr. 53, Moscow, 117924, RussiaP. A. RukoyatkinJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141 980, RussiaV. V. RusakovaJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141 980, RussiaE. StanInstitute for Space Sciences, Ro-76900, Bucharest-Magurele, RomaniaR. StanoevaJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141 980, RussiaM. HaiducInstitute for Space Sciences, Ro-76900, Bucharest-Magurele, RomaniaS. P. KharlamovLebedev Institute of Physics, Russian Academy of Sciences, Leninskiĭ pr. 53, Moscow, 117924, RussiaI. TsakovInstitute for Nuclear Research and Nuclear Energy, Academy of Sciences of Bulgaria, Sophia, BulgariaM. M. ChernyavskyLebedev Institute of Physics, Russian Academy of Sciences, Leninskiĭ pr. 53, Moscow, 117924, RussiaT. V. ShchedrinaJoint Institute for Nuclear Research, Dubna, Moscow oblast, 141 980, Russia
2007en
ABI
Аннотация
The results of investigation of the fragmentation of relativistic nuclei 9Be in an emulsion, which is accompanied by the formation of two 1.2-A-GeV He fragments, are presented. The angular measurements of the 9Be → 2He events are analyzed. The 9Be → 8Be + n fragmentation channel with the decay of 8Be from the ground (0+) and first excited (2+) states into a pair of α particles appears to be dominant.
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