## 当期目录 2022年  第39卷  第2期

2022, 39(2): 1-2.

2022, 39(2): 135-153. doi: 10.11804/NuclPhysRev.39.2022013

The neutron star as a supernova remnant is attracting high attention recently due to the gravitation wave detection and precise measurements about its mass and radius. In the inner core region of the neutron star, the strangeness degrees of freedom, such as the hyperons, can be present, which is also named as a hyperonic star. In this work, the neutron star consisting of nucleons and leptons, and the hyperonic star including the hyperons will be studied in the framework of the relativistic mean-field(RMF) model. Some popular non-linear and density-dependent RMF parametrizations will be adopted to investigate the role of hyperons in a hyperonic star on its mass, radius, tidal deformability, and other properties. Finally, the coupling strengths between mesons and hyperons are also discussed, which can generate the massive hyperonic star with present RMF parameter sets, when the vector coupling constants are strong.

2022, 39(2): 154-159. doi: 10.11804/NuclPhysRev.39.2021083

2022, 39(2): 160-171. doi: 10.11804/NuclPhysRev.39.2022012

When a Simple Harmonic Oscillator (SHO) wave function is used as an effective wave function, a very important parameter in the SHO wave function is the effective \begin{document}$\, \beta$\end{document} value (\begin{document}$\, \beta_{\rm effective}$\end{document}). We obtain the analytical expression of \begin{document}$\, \beta_{\rm eff}$\end{document}(\begin{document}$\, \beta_{\rm effective}$\end{document}) of the SHO wave function in coordinate space and momentum space. The expression is applied to the light meson system \begin{document}$(u\bar{u}, ~u\bar{s})$\end{document} to compare the behavior of \begin{document}$\, \beta_{\rm eff}$\end{document}. The results show that \begin{document}$\, \beta_ {{\rm eff}, \, \boldsymbol{r}}$\end{document} in coordinate space and \begin{document}$\, \beta_ {{\rm eff}, \, \boldsymbol{p}}$\end{document} in momentum space are significantly different in the ground state, however, similar in the highly excited states with Cornell potential.
2022, 39(2): 172-178. doi: 10.11804/NuclPhysRev.39.2021046

2022, 39(2): 179-187. doi: 10.11804/NuclPhysRev.39.2021070

2022, 39(2): 188-194. doi: 10.11804/NuclPhysRev.39.2021047

2022, 39(2): 195-200. doi: 10.11804/NuclPhysRev.39.2021080

2022, 39(2): 201-205. doi: 10.11804/NuclPhysRev.39.2021061

2022, 39(2): 206-214. doi: 10.11804/NuclPhysRev.39.2021027

2022, 39(2): 215-223. doi: 10.11804/NuclPhysRev.39.2021050

2022, 39(2): 224-231. doi: 10.11804/NuclPhysRev.39.2021042

2022, 39(2): 232-237. doi: 10.11804/NuclPhysRev.39.2022004

2022, 39(2): 238-244. doi: 10.11804/NuclPhysRev.39.2021054

To determine the concentration of trace vanadium in saline lake brines, a vanadium pre-purification process is established to reduce the matrix effect of the huge coexisting ions. Two steps, extraction and stripping, are included in the process. The factors affecting the vanadium purification efficiencies are investigated in detail and the optimum conditions are determined to be: vanadium in the solutions was extracted by the organic phase containing 30% D2EHPA (v/v), 20% TBP (v/v) in n-hexane for 30 min at pH 3.0, and then stripped with 3 mol/L H2SO4 for 10 min. Trace vanadium in two natural brine samples are pre-purified using this process and their concentrations are determined by inductively coupled plasma-mass spectrometry (ICP-MS) with sensitivity and limit of detection (LOD) for 51V are 53 171 cps/(µg/L) and 1.88 ng/L, respectively. The standard addition recoveries of the brine samples are ~100% but with small relative standard deviations (RSD<0.6%), indicating that the method can be used to measure the concentration of trace vanadium in natural complicated waters, such as seawater and saline lake brines.
2022, 39(2): 245-251. doi: 10.11804/NuclPhysRev.39.2021037

For Swift Heavy Ion(SHI) irradiation, at micro-scale, the incident ions are randomly distributed regardless of beam scanning or defocusing. Recently, this nonuniformity of ion irradiation is becoming critical for the cutting-edge applications of SHIs, i.e., fabrication of high-density microporous membranes, and evaluation of single event effect for the aerospace electronics. In this study, a Monte Carlo(MC) code is developed for simulating the planar distribution of incident ions. Statistically, the predicted distributions of latent tracks and micropores show good coincidence with the direct observations of microporous membranes. According to the simulations, the porosities of membranes are predicted as functions of ion fluences and pore sizes. An empirical formula is proposed for the estimation of effective porosity prior to ion irradiation and chemical etching. Moreover, to evaluate the selectivity of microporous membranes, the probability of multi-pores formation is estimated. A balance between the porosity and selectivity of the membranes is suggested. By employing the MC simulations, uniformity issues of ion irradiation at micro-scale are investigated, whose results may serve as important references for single event effect etc.

2022, 39(2): 252-257. doi: 10.11804/NuclPhysRev.39.2021038

2022, 39(2): 258-265. doi: 10.11804/NuclPhysRev.39.2021072