Isomeric ratio of the ^(181)Ta(γ,3n)^(178m,g)Ta reaction products at energy Eγmax up to 95 MeV  

作　　者：O.S.Deiev I.S.Timchenko S.N.Olejnik V.A.Kushnir V.V.Mytrochenko S.A.Perezhogin 

机构地区：[1]National Science Center"Kharkiv Institute of Physics and Technology",1 Akademicheskaya St.,61108 Kharkiv,Ukraine

出　　处：《Chinese Physics C》2022年第1期102-109,共8页中国物理C（英文版）

摘　　要：The photoneutron reaction^(18)Ta(y,3m)(178m,g)Ta was investigated with the beam from the NSC KIPT electron linear accelerator LUE-40.The measurements were performed using the residual y-activity method.The bremsstrahlung flux-averaged cross sections((E_(γmax))>.(r(E_(γmax))>m.<r(E_(γmax))g and the isomerie ratio of the re-action products d(E_(γmax))were measured.The theoretical values of the averaged cross-sections and isomeric ratio were calculated using the partial cross-sections from the TALYS1.95 code for different level density models LD 1-6..The obtained experimental d(E_(γmax))agree with the data in the lterature,but differ from the theoretical values in ab-solute magnitude and the behavior of the energy dependence.A comparison of the determined averaged cross-sec-tions with the calculated cross sections showed the best agreement for the case of the LD 5 model.

关 键 词：bremsstrahlung flux-averaged cross-section isomeric ratio bremsstrahlung end-point energy of 35-95 MeV activation and off-line 7-ray spectrometric technique TALYS1.95 GEANT4.9.2 

分 类 号：O571[理学—粒子物理与原子核物理]