Zhendong An

• Sun Yat-sen University

The neutron capture measurement of natural rhenium was performed with the time-of-flight technique at the Back-n facility of the China Spallation Neutron Source in the energy range from 1 to 500 eV of the resolved resonance region (RRR) and from 5 to 400 keV in the unresolved resonance region (URR). Prompt γ -rays originating from neutron-induced c...

The neutron capture cross sections (\({n,\gamma }\)) of bromine were obtained using the time-of-flight technique at the Back-n facility of the China Spallation Neutron Source. Prompt \(\gamma\)-rays originating from neutron-induced capture events were detected using four C\({}_6\)D\({}_6\) detectors. The pulse-height weighting technique and double-...

In nuclear astrophysics, Pr141 is mainly produced by an s process, which has a neutron magic number (N=82) leading to its low capture cross section and strongly affecting the s process. Its neutron capture cross section is an important input parameter for nuclear astrophysical network calculations. According to the EXFOR database, the measurement p...

The neutron capture cross section of [Formula: see text]Ta is relevant to s-process of nuclear astrophysics, extraterrestrial samples analysis in planetary geology and new generation nuclear energy system design. The [Formula: see text]Ta([Formula: see text]) cross section had been measured between 1 eV and 800 keV at the back-streaming white neutr...

Er162 is one of the p nuclei in nuclear astrophysics, and its (n,γ) cross sections are important input parameters in nuclear astrophysics network calculations. Resonance data for Er162(n,γ)Er163 at 67.8 eV is currently not present in the EXFOR database; however, it is included in the ENDF/B VIII.0 database. The (n,γ) cross section of Ernat has been...

In nuclear astrophysics, the nuclides \(^{151}\)Eu and \(^{153}\)Eu are both in the path of the s-process, and their (n, \(\gamma \)) cross sections are important input parameters for the calculation of the nuclear astrophysics network. According to the EXFOR database, the neutron capture cross section of natural europium in the resonance region ha...

Multiple isotopes of samarium element are the isotopes produced by the s process, and 154Sm is produced by the r process. In addition, 144Sm is p nuclei in nuclear astrophysics. The measurement of these can help us to better understand the results of relevant photonuclear reaction experiments. On the other hand, 149Sm is a 235U fission product with...

Er162 and Er164 are two of the 35 p nuclei, and their (n,γ) cross sections are important input parameters in nuclear astrophysics network calculations. The neutron capture cross section in the resonance region of isotopes and even the natural erbium (Ernat) sample has not been measured experimentally according to the EXFOR database. The (n,γ) cross...

The neutron capture cross section of \(^{197}\hbox {Au}\) was measured using the time-of-flight (TOF) technique at the Back-n facility of the China Spallation Neutron Source (CSNS) in the 1 eV to 100 keV range. Prompt \(\gamma \)-rays originating from neutron-induced capture events were detected by four C\(_{6}\)D\(_{6}\) liquid scintillator detect...

The mechanism of deuteron formation in neutron-induced reactions is studied within the framework of the isospin-dependent quantum molecular dynamics model, using the GEMINI code. The influence of the \(\hbox {n}\,+\,\hbox {p}\,\rightarrow \,\hbox {d}\) reaction channel is investigated by analyzing the deuteron production cross sections in the neutr...

We present the first experimental determination on the spectroscopic amplitudes (SAs) for the α-cluster in the B11 ground state via the Li7(Li6,d)11B reaction using a high-precision magnetic spectrograph. This is believed to have a strong effect on the studies of α-induced reactions which are crucial in nuclear astrophysics. It is found that the pr...

The α-clustering configurations in light nuclei have attracted a great deal of attention over past years. Nuclear reactions serve as one possible way to study this topic. The aim of this paper was to discuss whether or not heavy-ion collisions at Fermi energy could be a good tool to investigate the cluster configurations in light nuclei. In particu...

The C12(α,γ)O16 reaction plays a key role in the evolution of stars with masses of M>0.55M⊙. The cross-section of the C12(α,γ)O16 reaction within the Gamow window (Ec.m.=300keV, T9=0.2) is extremely small (about 10−17 barn), which makes the direct measurement in a ground-based laboratory with existing techniques unfeasible. Up until now, the cross-...

The ${}^{12}\mathrm{C}(\alpha,\gamma){}^{16}\mathrm{O}$ reaction plays a key role in the evolution of stars with masses of $M >$ 0.55 $M_\odot$. The cross-section of the ${}^{12}\mathrm{C}(\alpha,\gamma){}^{16}\mathrm{O}$ reaction within the Gamow window ($E_\textrm{c.m.}$ = 300 keV, $T_\textrm9$ = 0.2) is extremely small (about $10^{-17}$ barn), w...

A new astrophysical reaction rate for 12C(α, γ)16O has been evaluated on the basis of a global R-matrix fitting to the available experimental data. The reaction rates of 12C(α, γ)16O for stellar temperatures between 0.04 ≤ T9 ≤ 10 are provided in a tabular form and by an analytical fitting expression. At T9 = 0.2, the reaction rate is (7.83 ± 0.35)...

Determination of the accurate astrophysical S factor of C12(α,γ)O16 reaction has been regarded as the holy grail of nuclear astrophysics for decades. In current stellar models, a knowledge of that value to better than 10% is desirable. Due to the practical issues, tremendous experimental and theoretical efforts over nearly 50 years are not able to...

Determination of the accurate astrophysical S factor of {$^{12}$C($\alpha,\gamma$)$^{16}$O} reaction has been regarded as a holy grail of nuclear astrophysics for decades. In current stellar models, a knowledge of that value to better than 10\% is desirable. Due to the practical issues, tremendous experimental and theoretical efforts over nearly 50...

We combine a simulation program for Laser Compton Scattering (LCS) with another for deuteron photodisintegration to simulate an experiment to search for parity violation in the d((gamma) over right arrow, n)p reaction using a LCS source. We extract the differential cross-section for d((gamma) over right arrow, n)p near threshold from fits to all re...

We studied the structure of C-12 through the modified Glauber model using the density distributions calculated by the relativistic mean field theory. The experimental reaction cross sections of C-12 + C-12 were analyzed within the MOL by a chi(2)-fitting procedure. The effects of the nuclear deformation on the reaction cross sections are studied. T...

The study of interactions between a high-power laser and atoms has been one of the fundamental and interesting topics instrong field physics for decades. Based on a nonperturbative model, ten years ago, we developed a set of programsto facilitate the study of interactions between a circularly polarized laser and atomic hydrogen. These programs incl...

Nuclear excitation by electron transition (NEET) is a fundamental mechanism of atomic deexcitation. In the last decades a series of experiments has been performed to study the NEET probability (PNEETPNEET) of 189Os. The determination of the PNEETPNEET of 189Os involves a crucial parameter B, which is the branching ratio for populating the isomer st...

For the full determination of the characteristics of laser-Compton X/γ-ray source, a four-dimensional (three-dimensional time and frequency-domain) Monte Carlo laser-Compton scattering simulation code has been developed with Geant4 toolkit. The code has the capability to calculate the spatial, spectral and temporal characteristics of the LCS X/γ-ra...

Based on the non-relativistic theory and dipole approximation, we have developed a new program to study the interaction between a circularly polarized laser and hydrogen atoms. In this paper, we present our calculation of above-threshold ionization (ATI) rate based on the new code and compare the results with that of a pertubation theory calculatio...