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The bremsstrahlung flux-averaged cross sections for the photoneutron reactions $^{text{93}}$Nb($gamma $,xn;x=1-5)$^{text{(93-x)m,g}}$Nb were measured in the range of boundary energies of bremsstrahlung $gamma $-quanta $E_{gamma text{max}}$=33-93 MeV with a step $Delta E_{gamma text{max}}approx $ 2 MeV. The isomeric ratios of the average cross-sections of the products of the reactions $^{text{93}}$Nb ($gamma $ ,4n)$^{text{89m,g}}$Nb and $^{text{93}}$Nb($gamma $,5n)$^{text{88m,g}}$ Nb were determined in the energy ranges $E_{gamma text{max}}$ = 50-93 and 70-93 MeV, respectively. The experiments were carried out on the beam of the linear electron accelerator LU-40 of the Science and Research Establishment (SRE) Accelerator at National Science Center Kharkov Institute of Physics and Technology (NSC KIPT) using the method of induced activity. Calculations of the cross sections, average cross sections, and isomeric ratios of the reaction products were performed using the TALYS 1.9 code with default parameters and the GEANT4 code. The tendency of a more successful description of the average cross sections of photoneutron reactions with the formation of final odd-even Nb nuclei than odd-odd Nb nuclei is revealed. The experimental average cross sections for the reactions ($gamma $,2n) and ($gamma $,4n) are in good agreement with theory, while in the case of reactions ($gamma $,n), ($gamma $,3n), and ($ gamma $,5n), some discrepancies are observed. The results obtained for the reactions ($gamma $,n), ($gamma $,3n) and ($gamma $,4n) are in satisfactory agreement with the known literature data. The average cross sections for the reactions ($gamma $,2n) and ($gamma $,5n) and the isomeric ratios of the reaction products $^{text{93}}$Nb($gamma $,5n)$^{text{88m,g}}$Nb were measured for the first time.
A comprehensive decay scheme of $^{93}$Nb below 2 MeV has been constructed from information obtained with the $^{93}$Nb(n,n$^prime$$gamma$) and $^{94}$Zr(p,2n$gamma$$gamma$)$^{93}$Nb reactions. Branching ratios, lifetimes, transition multipolarities
The Gamow-Teller strength distribution from ${}^{88}$Sr was extracted from a $(t,{}^{3}text{He}+gamma)$ experiment at 115 MeV/$u$ to constrain estimates for the electron-capture rates on nuclei around $N=50$, between and including $^{78}$Ni and $^{88
Radiative strength functions (RSFs) in 93-98Mo have been extracted using the (3He,alpha gamma) and (3He,3He gamma) reactions. The RSFs are U-shaped as function of gamma energy with a minimum at around E_gamma=3 MeV. The minimum values increase with n
Our understanding of the low-lying resonance structure in $^{12}$C remains incomplete. We have used the $^{11}text{B}(p,3alpha)gamma$ reaction at proton energies of $E_p=0.5-2.7$ MeV as a selective probe of the excitation region above the $3alpha$ th
Double differential cross sections (DDCS) for light charged particles (proton, deuteron, triton, 3He, alpha) and neutrons produced by a proton beam impinging on a 238U target at 62.9 MeV were measured at the CYCLONE facility in Louvain-la-Neuve (Belg