Исследование кластеризации легких ядер в релятивистской фрагментации П.И. Зарубин (ОИЯИ, Дубна) N. P. Andreeva a, D. A. Artemenkov b,V. Bradnova b, M.

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Исследование кластеризации легких ядер в релятивистской фрагментации П.И. Зарубин (ОИЯИ, Дубна) N. P. Andreeva a, D. A. Artemenkov b,V. Bradnova b, M. M. Chernyavsky c, A. Sh. Gaitinov a, S. P. Kharlamov c, A. D. Kovalenko b, М. Haiduc d, S. G. Gerasimov c, L. A. Goncharova c, N. Kachalova b V. G. Larionova c, F. G. Lepekhin e, A. I. Malakhov b, A. A. Moiseenko f, G. I. Orlova c, N. G. Peresadko c, N. G. Polukhina c, P. A. Rukoyatkin b, V. V. Rusakova b, V. R. Sarkisyan f, T. V. Schedrina b, B. B. Simonov e, E. Stan e, R. Stanoeva g, I. Tsakov g, S. Vokal h, P. I. Zarubin b, and I.G Zarubina b a Insitutute of Physics and Technology, Almaty, Kazakhstan b Joint Institute for Nuclear Research, Dubna, Russia c P. N. Lebedev Physical Institute, RAS, Moscow, Russia d Institute of Space Sciences, Bucharest-Magurele, Romania e Petersburg Institute of Nuclear Physics, RAS, Gatchina, Russia f Erevan Physical Institute, Erevan, Armenia g Insttitute for Nuclear Research and Nuclear Energy, BAS, Sofia, Bulgaria h P. J. Šafárik University, Košice, Slovak Republic

14 N Dissociation with 8 Be like fragmentation 3  after proton

Mg-Si Dissociation into charge state  +proton

Dubna: Relativistic Nuclei

Secondary beams of light radioactive nuclei will be produced mostly via charge exchange reactions. 8 B and 9 Be beams has been formed via fragmentation of 10 B.

Clustering building blocks: more than one nucleon bound, stable & no exited states below particle decay thresholds – deuteron, triton, 4 He, and 3 He nuclei

A=6  =0.092 MeV

4.5A GeV/c 6 Li

7 Li. About 7% of all inelastic interactions of 7 Li nuclei are “white” stars (80 events). Decay of 7 Li nucleus to  - particle and triton - 40 events.

1.9 A GeV 10 B 10 B is disintegrated to 2 doubly charged and 1singly charged particles in 70% of “white” stars. A singly charged particle is the deuteron in 40% like in case of 6 Li. 8 Be contribution is 20%. 10 В  9 Bep – 3%

ВЫХОДЫ ФРАГМЕНТОВ ЯДРА 11 В А.ВОКАЛОВА и С.Вокал, Я.Врлакова, М.Карабова Семинар посвященый 90-летию со дня рождения К.Д.Толстова “Исследование процессов фрагментации релятивистских ядер на Нуклотроне методом ядерных фотоэмульсий” Дубна, 4-5 октября 2005г.

Q4Q4 Kanál disociácie (Z F )N Spolu116

Из этих 116 взаимодействий мы выделили те, у которых Nh=0 и ns=0 Nh - ч+с, ns - р Q4Q4 421N

Splitting to HeHe with two target fragments, HeHe, HeHH, 6 Lip, and 4H. 2 A GeV/c 7 Be.

2 A GeV/c 10 B 8 B 2 A GeV/c 10 B  8 B

7 Be% 8 B(+1)% Сумма9437

8 B→ 7 Be+p “white” stars =73 MeV/c =52 MeV/c

ε ij =arccos((P Ti ∙ P Tj )/ (P Ti ∙ P Tj )) ≈2 8 B→ 7 Be+p “white” stars