Isomeric pair 95m,g Nb in the photonuclear reactions on natMo at the bremsstrahlung end-point energy of 38–93 MeV  

作　　者：I.S.Timchenko O.S.Deiev S.M.Olejnik S.M.Potin V.A.Kushnir V.V.Mytrochenko S.A.Perezhogin V.A.Bocharov 

机构地区：[1]Institute of Physics,Slovak Academy of Sciences,SK-84511 Bratislava,Slovakia [2]National Science Center"Kharkov Institute of Physics and Technology",1,Akademichna St.,61108,Kharkiv,Ukraine [3]CNRS/IJCLAB,15 Rue Georges Clemenceau Str.,Orsay,91400,France

出　　处：《Chinese Physics C》2023年第12期64-72,共9页中国物理C（英文版）

摘　　要：The ^(nat)Mo(γ,xnp)^(95m,g)Nb photonuclear reaction was studied using the electron beam from the NSC KIPT linear accelerator LUE-40.The experiment was performed using the activation and off-line γ-ray spectrometric technique.The experimental isomeric yield ratio(IR) was determined for the reaction products ^(95m,g)Nb at the bremsstrahlung end-point energy E_(γmax) range of 38-93 MeV.The obtained values of IR are in satisfactory agreement with the results of other studies and extend the range of previously known data.The theoretical values of the yields Y_(m,g)(E_(γmax)) and the IR for the isomeric pair ^(95m,g)Nb from the ^(nat)Mo(γ,xnp) reaction were calculated using the partial cross-sections σ(E) from the TALYS1.95 code for six different level density models.For the investigated range of E_(γmax),the theoretical dependence of IR on energy was confirmed-the IR smoothly increases with increasing energy.The comparison showed a noticeable difference(more than 3.85 times) in the experimental IR relative to all theoretical estimates.

关 键 词：photonuclear reactions natMo isomeric pair 95m gNb isomeric yield ratio reaction yield bremsstrahlung end-point energy of 38–93 MeV activation and off-lineγ-ray spectrometric technique TALYS1.95 level density model GEANT4.9.2. 

分 类 号：O571[理学—粒子物理与原子核物理] TL53[理学—物理]