A5053507182- Nuclear physics research studies
- Astronomical and nuclear sciences
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Advanced NMR Techniques and Applications
- Muscle activation and electromyography studies
- Quantum Chromodynamics and Particle Interactions
- Prosthetics and Rehabilitation Robotics
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Dark Matter and Cosmic Phenomena
- X-ray Spectroscopy and Fluorescence Analysis
- Boron Compounds in Chemistry
- Nuclear reactor physics and engineering
- Advanced Chemical Physics Studies
- Gamma-ray bursts and supernovae
- Crystallography and molecular interactions
- Stroke Rehabilitation and Recovery
- Autoimmune Bullous Skin Diseases
- Quantum, superfluid, helium dynamics
- Soft Robotics and Applications
- Particle physics theoretical and experimental studies
- Laser-Plasma Interactions and Diagnostics
- Astrophysics and Star Formation Studies
- Nuclear Materials and Properties
Beihang University
2024-2025
Cleveland Clinic
2024
China Institute of Atomic Energy
2014-2024
Shandong University
2024
The ^{13}C(α,n)^{16}O reaction is the main neutron source for slow-neutron-capture process in asymptotic giant branch stars and intermediate process. Direct measurements at astrophysical energies above-ground laboratories are hindered by extremely small cross sections vast cosmic-ray-induced background. We performed first consistent direct measurement range of E_{c.m.}=0.24 to 1.9 MeV using accelerators China Jinping Underground Laboratory Sichuan University. Our covers almost entire Gamow...
The fusion-evaporation reaction $^{40}\mathrm{Ca}+^{175}\mathrm{Lu}$ aimed at synthesizing new neutron-deficient protactinium isotopes has been studied the gas-filled recoil separators SHANS and SHANS2. cross sections for $xn$ $pxn$ evaporation channels were measured. calculation by statistical model HIVAP was performed to reproduce experimental data. quasifission process in also with time-dependent Hartree-Fock theory improved quantum molecular dynamics model. It is shown that influence of...
We use an underground counting lab with extremely low background to perform activity measurement for the C12+13C system energies down Ec.m.=2.323 MeV, at which 12C(13C,p)24Na cross section is found be 0.22(7) nb. The fusion derived a statistical model calibrated using experimental data. Our new result of first decisive evidence in carbon isotope systems rules out existence astrophysical S-factor maximum predicted by phenomenological hindrance model, while confirming rising trend towards...
The $^{12}\mathrm{C}(\ensuremath{\alpha},\ensuremath{\gamma})^{16}\mathrm{O}$ reaction substantially influences the abundance ratios of main isotopes carbon and oxygen hence has been regarded as holy grail in nuclear astrophysics. Its importance lies fact that it significantly affects yield key elements plays a crucial role study mass gap black holes. This reaction's cross section is greatly influenced by subthreshold state 7.117-MeV ${1}^{\ensuremath{-}}$ $^{16}\mathrm{O}$, which...
Abstract Robot-assisted isokinetic training has been widely adopted for knee rehabilitation. However, existing rehabilitation facilities are often heavy, bulky, and extremely energy-consuming, which limits the opportunities only at designated hospitals. In this study, we introduce a highly integrated lightweight (52 kg) robot that can provide home-based without external power. By integrating motor, torque/angle sensors, control circuit, energy regeneration circuit into single driver module,...
Abstract Nuclear β-decay plays a pivotal role at various stages of stellar evolution. However, the effective decay
 rates nuclei in astrophysical environments may differ significantly from their laboratory values. This paper presents
 detailed methodology for calculating nuclear half-life under influence temperature, electron density, ionization
 and incomplete thermal equilibrium. We analyze impact conditions on 26 Al,
 59 Fe, 79 Se 205 Pb, revealing...
The near-symmetric complete fusion reaction $^{78}\mathrm{Kr}+^{107}\mathrm{Ag}\ensuremath{\rightarrow}^{185}\mathrm{Bi}^{*}$ was studied at the gas-filled recoil separator SHANS with an attempt to synthesize extremely neutron-deficient proton-unbound $^{182,183}\mathrm{Bi}$ isotopes. No decay events which could be attributed them were observed. two- and three-particle evaporation residues $^{180,179}\mathrm{Hg}$ ($\ensuremath{\alpha}p, \ensuremath{\alpha}pn$) $^{183,182}\mathrm{Pb}$ ($pn,...
The 13C(7Li, 6He) 14 N0,1 reactions were measured at E (7Li) = 34 MeV with the Q3D magnetic spectrometer of HI-13 tandem accelerator, and first peaks angular distributions obtained for time. 14N0,1 proton spectroscopic factors extracted to be 0.67±0.09 0.73±0.10 , respectively. Using 13C(p, γ) 14N direct capture S dc(E) derived by factors, measurement data both 1− 0− resonances well fitted via updating resonance parameters, then total astrophysical S(E) reaction rates determined stellar...
The ${}^{13}$C(${}^{9}$Be,${}^{8}$Li)${}^{14}$N angular distribution was measured with a ${}^{9}$Be beam of 40 MeV. proton spectroscopic factor the ground state extracted to be 0.73 $\ifmmode\pm\else\textpm\fi{}$ 0.15 by normalization calculated differential cross sections distorted-wave Born approximation (DWBA) experimental data. compared existing theoretical and values.
The $^{12}\mathrm{C}(\ensuremath{\alpha},\ensuremath{\gamma})^{16}\mathrm{O}$ reaction plays a key role in the evolution of stars with masses $M>0.55\phantom{\rule{0.16em}{0ex}}{M}_{\ensuremath{\bigodot}}$. cross-section within Gamow window (${E}_{\text{c.m.}}=300\phantom{\rule{0.16em}{0ex}}\mathrm{keV}, {T}_{9}=0.2$) is extremely small (about ${10}^{\ensuremath{-}17}$ barn), which makes direct measurement ground-based laboratory existing techniques unfeasible. Up until now, cross-sections...
$^{26}\mathrm{Al}$ with a half-life of $7.17\ifmmode\times\else\texttimes\fi{}{10}^{5}$ years is one the most significant nuclides in $\ensuremath{\gamma}$-ray astronomy and presolar grains meteorites. Its main production mechanism $\mathrm{H}$-burning MgAl cycle $^{25}\mathrm{Mg}(p,\ensuremath{\gamma})^{26}\mathrm{Al}$ reaction. In temperature region 0.05--0.3 GK astrophysical interest, reaction rate dominated by resonant capture several low-energy resonances. this work, we report results...
The angular distribution of the 2H ( 6He,7Li n reaction was measured with a secondary 6He beam 36.4MeV for first time. proton spectroscopic factor 7Li ground state extracted to be 0.42±0.06 by normalizing calculational differential cross-sections distorted-wave Born approximation experimental data. It discussed that uncertainty factors from one-nucleon transfer reactions induced deuteron might reduced determining volume integrals imaginary optical potentials precisely.
We present the first experimental determination on spectroscopic amplitudes (SAs) for α-cluster in B11 ground state via Li7(Li6,d)11B reaction using a high-precision magnetic spectrograph. This is believed to have strong effect studies of α-induced reactions which are crucial nuclear astrophysics. It found that previous SAs from shell model calculations cause overestimations up 23% C12(α,γ)16O SE2(300) factor and 34% C13(α,n)16O S(190) with respect results experimentally determined SAs. Due...
The $^{13}\mathrm{N}$$+p$ elastic resonance scattering has been studied in inverse kinematics via a thick-target method. A $^{13}\mathrm{N}$ secondary beam of $47.8\ifmmode\pm\else\textpm\fi{}1.5$ MeV produced by the $^{2}\mathrm{H}$($^{12}\mathrm{C}$,$^{13}\mathrm{N}$)$n$ reaction was used to bombard 9.33 mg/cm${}^{2}$ (${\mathrm{CH}}_{2}){}_{n}$ target. recoil protons were detected $\ensuremath{\Delta}E\text{\ensuremath{-}}E$ silicon counter telescope at...
Abstract The 12 C+ C fusion reaction plays a crucial role in stellar evolution and explosions. Its main open channels include , p n 8 Be. Despite more than half century of efforts, large differences remain among the experimental data this measured using various techniques. In work, we analyze existing statistical model. Our calculation shows following: 1) relative systematic uncertainties predicted branching ratios decrease as increase; 2) total modified astrophysical S -factors ( * factors)...
The 95Zr(n, γ)96Zr reaction cross section is crucial in the modeling of s-process nucleosynthesis asymptotic giant branch stars because it controls operation branching point at unstable 95Zr and subsequent production 96Zr. We have carried out measurement 94Zr(18O, 16O) 90Zr(18O, reactions obtained γ-decay probability ratio 96Zr* 92Zr* to determine sections with surrogate method. Our deduced Maxwellian-averaged 66 ± 16 mb 30 keV close value recommended by Bao et al., but 30% more than a...
The relative $\ensuremath{\gamma}$-decay probability ratios of the neutron resonance states in $^{94}\mathrm{Zr}$ and $^{92}\mathrm{Zr}$ populated via two-neutron transfer reactions, $^{92}\mathrm{Zr}(^{18}\mathrm{O},^{16}\mathrm{O})^{94}\mathrm{Zr}$ $^{90}\mathrm{Zr}(^{18}\mathrm{O},^{16}\mathrm{O})^{92}\mathrm{Zr}$, have been measured to test validity surrogate ratio method (SRM) determining $(n, \ensuremath{\gamma})$ reaction cross section. sections...
The long-lived $^{60}$Fe (with a half-life of 2.62 Myr) is crucial diagnostic active nucleosynthesis in the Milky Way galaxy and supernovae near solar system. neutron-capture reaction $^{59}$Fe(n,$\gamma$)$^{60}$Fe on $^{59}$Fe (half-life = 44.5 days) key for production massive stars. This cross section has been previously constrained by Coulomb dissociation experiment, which offered partial constraint $E$1 $\gamma$-ray strength function but negligible $M$1 $E$2 components. In this work,...
In the recent work at Notre Dame, correlations between three carbon isotope fusion systems have been studied and it is found that cross sections of 12C+13Cand 13C+13C provide an upper limit on section astrophysically important 12C+12C reaction.The aim this to continue such research by measuring 12C+13C reaction lower energies. experiment, off-line activity measurement was performed in ultra-low background laboratory for has determined energy range Ec.m. =2.5–6.8 MeV. Comparison several models...
The angular distributions of the ${}^{12}\mathrm{C}{{(}^{11}\mathrm{B},{\phantom{\rule{0.16em}{0ex}}}^{11}\mathrm{B})}^{12}\mathrm{C}$ and ${}^{12}\mathrm{C}{{(}^{11}\mathrm{B},{\phantom{\rule{0.16em}{0ex}}}^{12}\mathrm{C})}^{11}\mathrm{B}$ reactions have been measured at an incident energy 50 MeV by using high resolution Q3D magnetic spectrometer HI-13 tandem accelerator China Institute Atomic Energy, Beijing. optical potential parameters ${}^{11}\mathrm{B}+{}^{12}\mathrm{C}$ system are...
$^{25}\mathrm{Mg}(p,\ensuremath{\gamma})^{26}\mathrm{Al}$ is the most important reaction in Mg-Al cycle hydrogen burning regions of stars. Its cross sections at stellar energies are essential to understand issues radioactive $^{26}\mathrm{Al}$ galaxy and meteorites. The 57.7 keV resonance dominate astrophysical rates relative low temperature, but it very difficult measure its strength directly, indirect measurement results deviate by a factor about 2 far. In this work, angular distributions...