A5102808478- Nuclear physics research studies
- Atomic and Molecular Physics
- Nuclear reactor physics and engineering
- Nuclear Physics and Applications
- Quantum Chromodynamics and Particle Interactions
- Privacy-Preserving Technologies in Data
- Advanced Chemical Physics Studies
- Astronomical and nuclear sciences
- Nuclear Materials and Properties
- Stochastic Gradient Optimization Techniques
- Particle physics theoretical and experimental studies
- Graphene research and applications
- High-pressure geophysics and materials
- High-Energy Particle Collisions Research
- Rare-earth and actinide compounds
- Magnetic confinement fusion research
- Cryptography and Data Security
- Radiopharmaceutical Chemistry and Applications
- Misinformation and Its Impacts
- Carbon Nanotubes in Composites
- Optimization and Search Problems
- Advanced ceramic materials synthesis
- Advanced Bandit Algorithms Research
- Cold Fusion and Nuclear Reactions
- Diamond and Carbon-based Materials Research
City University of Hong Kong
2023-2024
City University of Hong Kong, Shenzhen Research Institute
2023-2024
China Institute of Atomic Energy
2001-2015
Georgia Institute of Technology
2009-2010
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro
1999-2002
Fusion-evaporation cross sections were measured in the two systems $^{48}\mathrm{Ca}+^{90,96}\mathrm{Zr}$ an energy range from well below to above Coulomb barrier. The sub-barrier fusion of $^{48}\mathrm{Ca}+^{90}\mathrm{Zr}$ is reproduced by coupled-channels calculations including lowest quadrupole and octupole vibrations $^{90}\mathrm{Zr}$, using a Woods-Saxon potential with standard diffuseness parameter = 0.68 fm. However, are overestimated low-energy slope excitation function for...
The transfer reactions of ${}^{11}\mathrm{B}{(d,p)}^{12}\mathrm{B}$ and ${}^{12}\mathrm{C}{(d,p)}^{13}\mathrm{C},$ at incident energy $11.8 \mathrm{MeV},$ have been used to extract asymptotic normalization coefficients root-mean-square radii for the last neutron in ${}^{12}\mathrm{B}$ ${}^{13}\mathrm{C}.$ It is found experimentally that second ${(J}^{\ensuremath{\pi}}{=2}^{\ensuremath{-}})$ third ${(J}^{\ensuremath{\pi}}{=1}^{\ensuremath{-}})$ excited states first...
The fusion cross sections of $^{6}\mathrm{Li}+^{208}\mathrm{Pb}$ system at energies near the barrier have been measured by means evaporation residue method and calculated in terms coupled-channels model, taking into account single double phonon octupole excitations $^{208}\mathrm{Pb}$ ${3}^{+}$ rotational state $^{6}\mathrm{Li}$. By comparing experimental results with theoretical calculations section $^{16}\mathrm{O}+^{208}\mathrm{Pb}$, which no breakup happens, we conclude that are...
The cross sections for elastic scattering of the weakly bound ${}^{9}\mathrm{Be}$ on ${}^{209}\mathrm{Bi}$ around Coulomb barrier have been measured with $\ensuremath{\sim}5%$ absolute accuracy from 40 to 48 MeV. potential obtained an optical model analysis has unusual behavior. At strong absorption radius imaginary (absorptive) is increasing (rather than decreasing) decreasing energy, as would be consistent a long range polarization arising mainly couplings breakup channels. real part,...
The elastic scattering angular distributions of the weakly bound 9Be projectile from 208Pb and 209Bi have been measured for 14 beam energies near threshold 37 to 50 MeV. parameters optical potential are extracted by means phenomenological model analysis with PTOLEMY. Both systems show unusual behavior in vicinity Coulomb barrier that strength imaginary (absorptive) part is increasing (rather than decreasing) decreasing energy, which quite different results some previous reports. This...
Handwritten signature verification has become one of the most important document authentication methods that are widely used in financial, legal, and administrative sectors. Compared with offline based on static images, online handwritten more reliable because temporary dynamic information (e.g., signing velocity, writing force, stroke order) alleviates risk being forged. However, existing solutions reliant specific devices customized pens or pads) require extensive data collection during...
The reaction cross sections of $^{27,28}\mathrm{P}$ and the corresponding isotones on Si target were measured at intermediate energies. $N=12$ 13 show an abrupt increase $Z=15$. experimental results for with $Z\ensuremath{\leqslant}14$ as well $^{28}\mathrm{P}$ can be described by modified Glauber theory optical limit approach. enhancement section could explained in enlarged core. Theoretical analysis few-body approaches underpredicted data $^{27}\mathrm{P}$. Our theoretical shows that core...
The decay by proton emission of the ${}^{117}\mathrm{La}$ nucleus has been studied via 310 MeV ${}^{58}\mathrm{Ni}{+}^{64}\mathrm{Zn}$ reaction. two levels that to ground state ${}^{116}\mathrm{Ba}$ with ${E}_{p}=783(6)$ keV ${(T}_{1/2}=22(5)$ ms] and ${E}_{p}=933(10)$ $[{T}_{1/2}=10(5)$ ms]. Calculations performed for a deformed emitter reproduce quite well experimental results confirming is strongly $({\ensuremath{\beta}}_{2}\ensuremath{\sim}0.3)$. Spin parity p-decaying have determined as...
From recent experimental data for the systems 9Be+208Pb,209Bi and 6Li+208Pb it results that complete fusion process is hindered with respect to realistic theoretical predictions (CCFUSS). However cross sections are different from each other contrary expectations. The 6Li show breakup of projectile into two outgoing fragments, well reproduced by CDCC approach, as α or deuteron capture target; this relevant theories on reaction dynamics around Coulomb barrier.
Distributed stochastic gradient descent (SGD) with compression has become a popular communication-efficient solution for accelerating distributed learning. One commonly used method is Top-K sparsification, which sparsifies the gradients by fixed degree during model training. However, there been lack of an adaptive approach to adjust sparsification maximize potential model's performance or training speed. This paper proposes novel in SGD framework that enables each step optimize convergence...
Under the single-particle potential model, root-mean-square radii for a number of states have been calculated by numerically solving Schr\"odinger equations, with binding energies and configurations determined experimentally. By studying relations between separation energies, scaling laws valence nucleon distributions these are obtained. In light laws, necessary conditions neutron halos proton are, respectively, deduced. The existence region is pointed out. It found that behavior nucleons...
The nonresonant direct radiative capture (DRC) cross sections of $^{11}\mathrm{B}(n,\ensuremath{\gamma})$ and $^{12}\mathrm{C}(n,\ensuremath{\gamma})$ at stellar energies are deduced by means the asymptotic normalization coefficient (ANC) method. ANC factors were extracted from peripheral transfer reactions $^{11}\mathrm{B}(d,p)$ $^{12}\mathrm{C}(d,p)$. DRC in good agreement with experimental results measurement. low obtained for first time.
We report on the measurement of subbarrier fusion cross sections for 48Ca+90,96Zr, with aim to pin down contribution transfer and inelastic excitations in reactions involving 90Zr 96Zr. also present a re-evaluation previously published data.
Spin distribution measurements were performed for the reaction 64Ni + 100Mo at three beam energies ranging from 230 to 260 MeV. Compound nucleus (CN) spin distributions obtained channel selective each evaporation residue populated by de-excitation cascade. A comparison of different indicates that its slope becomes steeper and with increasing energy. This change in is mainly due onset fission competition particle higher energies.
Distributed stochastic gradient descent (D-SGD) with compression has become a popular communication-efficient solution for accelerating optimization procedures in distributed learning systems like multi-robot systems. One commonly used method is Top-K sparsification, which sparsifies the gradients by fixed degree during model training. However, there been lack of an adaptive approach systematic treatment and analysis to adjust sparsification maximize potential model's performance or training...