Analysis of the excitation functions of (α, xnyp) reactions on natural copper

Autor:	S N Chintalapudi, B J Patel, N. L. Singh, D R S Somayajulu
Rok vydání:	1994
Předmět:	Nuclear reaction Materials science Stable isotope ratio Exciton Analytical chemistry General Physics and Astronomy chemistry.chemical_element Copper medicine.anatomical_structure chemistry medicine Gamma spectroscopy Atomic physics Nucleus Excitation FOIL method
Zdroj:	Pramana. 42:349-363
ISSN:	0973-7111 0304-4289
DOI:	10.1007/bf02847761
Popis:	Excitation functions of the reactions63Cu[(α, n), (α, 2n)+(α, pn)] and65Cu[(α, n), (α, 2n), (α, 3n), (α, 4n)+(α, p3n)] were investigated up to 50 MeV using stacked foil activation technique and Ge(Li) gamma ray spectroscopy method. Since natural copper used as the target has two odd-mass stable isotopes of abundance,63Cu(69.17%) and65Cu(30.83%), their activation in some cases, gives the same residual nucleus through different reaction channels but with very different threshold energies. In such cases, the individual reaction cross sections are separated with the ratio of theoretical cross sections. The experimental results were compared with the predictions of preequilibrium hybrid model of Blann. A general agreement was found in all reactions using initial exciton numbern 0=4(4p0h) and also preequilibrium fraction depends on the incident particle energy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dd5025bd71d35808fcc46c3cd9bdcd07 https://doi.org/10.1007/bf02847761 Zobrazit plný text záznamu Full text from SpringerLink