Investigation of Alpha-Induced Reactions on 107Ag at Astrophysical Energies

6th Nuclear Physics in Astrophysics

物理学;天文学

Yalçin, C.^1,2 ; Özkan, N.^1 ; Güray, R.T.^1 ; Gyürky, Gy.^2 ; Kiss, G.G.^2 ; Szücs, T.^2 ; Haiász, Z.^2 ; Fülöp, Zs.^2 ; Farkas, J.^2 ; Somorjai, E.^2 ; Korkulu, Z.^1 ; Rauscher, T.^2,3,4

Kocaeli University, Department of Physics, Umuttepe, Kocaeli

41380, Turkey^1

ATOMKI, POB.51., Debrecen

H-4001, Hungary^2

Department of Physics, University of Basel, Basel

CH-4056, Switzerland^3

Centre for Astrophysics Research, University of Hertfordshire, Hatfield, United Kingdom^4

关键词: Activation method;    Alpha induced reactions;    Astrophysical energies;    Center-of-mass energies;    Input parameter;    Low background;    Model calculations;    Statistical modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/665/1/012043/pdf
DOI  :  10.1088/1742-6596/665/1/012043

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

Cross sections of the107Ag(α, γ)111In and107Ag(α,n)110In reactions have been measured with the activation method at effective center-of-mass energies between 7.79 MeV and 12.00 MeV close to the astrophysical energy range. The irradiation and counting of the107Ag targets was carried out at ATOMKI using the cyclotron accelerator and the low background counting facility, respectively. Cross section results are presented and compared with the predictions of Hauser-Feshbach statistical model calculations using the NON-SMOKER and TALYS-1.4 codes. In general, above 10 MeV, the model calculation are able to reproduce reasonably well the experimental data, but below 10 MeV, depending on some input parameters strong deviations are also found.