PION-PRODUCTION IN NUCLEAR-CHARGE EXCHANGE-REACTIONS A(T,HE-3)

Authors
AVRAMENKO SA AKSINENKO VD ANIKINA MK BANNIK BP BELIKOV YA GAJEWSKI K GALPERIN AG GLAGOLEVA NS GOLOKHVASTOV AI KAMINSKY NI KHOROZOV SA KHUSAINOV EK KONDRATIEV VP KOZUBSKY EV KRASNOV LV KULAKOV BA LUKSTINS J LYUBOSHITZ VL MANDRIK OY MANYAKOV PK MATYUSHIN AT MATYUSHIN VT MIRKOWSKI J NURGOZHIN NN OKHRIMENKO LS OKHRIMENKO OV OSTANEVICH TG PAVLOWSKI Z PIATKOWSKI A POL YS RADOMANOV VB RUKOYATKIN PA SAITOV IS SEDYKH SA SHEVCHENKO IE SEMTCHENKOV AG STEPANOV IV TARAN GG ZAVYALOV VF
Citation
Sa. Avramenko et al., PION-PRODUCTION IN NUCLEAR-CHARGE EXCHANGE-REACTIONS A(T,HE-3), Nuclear physics. A, 596(3-4), 1996, pp. 355-366
Citations number
29
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. A → ACNP
ISSN journal
03759474
Volume
596
Issue
3-4
Year of publication
1996
Pages
355 - 366
Database
ISI
SICI code
0375-9474(1996)596:3-4<355:PINEA>2.0.ZU;2-R
Abstract
The charge exchange reaction (t,He-3) on carbon and magnesium targets is investigated in experiments using a streamer chamber. The experimen tal pion longitudinal momentum spectrum is compared with the calculate d one for events with a single secondary pion. From this comparison it follows that the contribution from quasi-free Delta(-) excitation in the target nucleus in a single pion channel is only 60-70%. The moment um of the pions in the remaining fraction of events is significantly h igher than that of the pions produced in delta de-excitation. The cont ribution from several possible processes is analyzed. The data indicat e a significant role of coherent pion production via N(1440) or/and N( 1520) in the target nucleus while part of the pion spectrum can be exp lained by projectile excitation.