H. L. Zang
A5112953661- Nuclear physics research studies
- Quantum Chromodynamics and Particle Interactions
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Astronomical and nuclear sciences
- Advanced Chemical Physics Studies
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Advanced NMR Techniques and Applications
- Quantum, superfluid, helium dynamics
- Electrochemical sensors and biosensors
- Transportation Planning and Optimization
- Military Defense Systems Analysis
- Gout, Hyperuricemia, Uric Acid
- Astrophysical Phenomena and Observations
- X-ray Spectroscopy and Fluorescence Analysis
- Selenium in Biological Systems
- Advanced biosensing and bioanalysis techniques
- Ion-surface interactions and analysis
- Physics of Superconductivity and Magnetism
- Railway Systems and Energy Efficiency
- Cold Atom Physics and Bose-Einstein Condensates
- Mass Spectrometry Techniques and Applications
- High-Energy Particle Collisions Research
China Railway Group (China)
2024
Peking University
2015-2022
State Key Laboratory of Nuclear Physics and Technology
2015-2022
China Institute of Atomic Energy
2020
Lanzhou University of Technology
2013
An inelastic excitation and cluster-decay experiment $^{2}\mathrm{H}(^{16}\mathrm{C},^{4}\mathrm{He}+^{12}\mathrm{Be}\text{ }\text{or}\text{ }^{6}\mathrm{He}+^{10}\mathrm{Be})^{2}\mathrm{H}$ was carried out to investigate the linear-chain clustering structure in neutron-rich $^{16}\mathrm{C}$. For first time, decay paths from $^{16}\mathrm{C}$ resonances various states of final nuclei were determined, thanks well-resolved $Q$-value spectra obtained threefold coincident measurement. The...
A cluster-transfer experiment 9Be(9Be,14C∗→α+10Be)4He was carried out using an incident beam energy of 45 MeV. This reaction channel has a large Q value that favors populating the high-lying states in 14C and separating various channels. number resonant are reconstructed from forward-emitting 10Be+α fragments with respect to three sets well-discriminated final 10Be, most which agree previous observations. state at 22.5(1) MeV is found decay predominantly into around 6 10Be daughter nucleus,...
The decay of the lightest nucleus with Tz=−3, 22Si, was studied by a silicon array. A charged-particle group at 5600 (70) keV in decay-energy spectrum identified experimentally as β-delayed two-proton emission from isobaric analog state (IAS) 22Al. Experimental results IAS fed superallowed Fermi transition were compared our large-scale shell-model calculations. ground-state mass 22Si obtained indirectly experiment for first time. Two-proton separation energy is deduced to be −108 (125) keV,...
A new $^{11}$Be($d,p$)$^{12}$Be transfer reaction experiment was carried out in inverse kinematics at 26.9$A$ MeV, with special efforts devoted to the determination of deuteron target thickness and required optical potentials from present elastic scattering data. In addition, a direct measurement cross sections for 0$_2^+$ state realized by applying an isomer-tagging technique. The s-wave spectroscopic factors 0.20(0.04) 0.41(0.11) were extracted 0$_1^+$ states, respectively, $^{12}$Be....
$\ensuremath{\beta}$-delayed one-proton emissions of $^{22}\mathrm{Si}$, the lightest nucleus with an isospin projection ${\mathrm{T}}_{z}=\ensuremath{-}3$, are studied a silicon array surrounded by high-purity germanium detectors. Properties $\ensuremath{\beta}$-decay branches and reduced transition probabilities for transitions to low-lying states $^{22}\mathrm{Al}$ determined. Compared mirror $\ensuremath{\beta}$ decay $^{22}\mathrm{O}$, largest value asymmetry in far,...
Background: Beta-decay spectroscopy provides valuable nuclear physics input for thermonuclear reaction rates of astrophysical interest and stringent test shell-model theories far from the stability line. Purpose: The available decay properties proton drip-line nucleus $^{27}$S is insufficient to constrain key resonance in $^{26}$Si$(p,\gamma)^{27}$P rate probe possible isospin asymmetry. scheme complicated being understood, which has motivated but also presented challenges our experiment....
A cluster-transfer experiment of $^9\rm{Be}(^9\rm{Be},^{14}\rm{C}\rightarrow\alpha+^{10}\rm{Be})\alpha$ at an incident energy 45 MeV was carried out in order to investigate the molecular structure high-lying resonant states $^{14}$C. This reaction is extremely large $Q$-value, making it excellent case select mechanism and final outgoing nuclei. The resonances $^{14}$C are reconstructed for three sets well discriminated $^{10}$Be. results confirm previous decay measurements with clearly...
Measurements of the 2H(16C,16C∗→4He+12Be or 6He+10Be)2H inelastic excitation and cluster-decay reactions have been carried out at a beam energy about 23.5 MeV/u. A specially designed detection system, including one multilayer silicon-strip telescope around zero degrees, has allowed high-efficiency threefold coincident therefore event-by-event determination unstable nucleus beam. The decay paths from 16C resonances to various states final 10Be 12Be are recognized thanks well-resolved Q-value...
β-decay studies of neutron-rich nuclei in and around the "island inversion" have been performed. With a systematic investigation half-lives for isotonic chains from N=19 to 22, conspicuous kinks observed at Z=13 provide clear signature boundary on northern (high-Z) side island. Based comparison with shell model calculations using Gogny D1S SDPF-M interactions, newly determined 22+ state 34Si 4519 keV presents an experimental evidence triaxiality this region sheds more light structure...
A new one-neutron adding reaction on 11Be was performed at 26.9A MeV. The elastic-scattering data measured simultaneously to determine the target component and optical potentials for entrance channel. special isomer-tagging method used cross sections 0+2 state. Based ratio of s-wave spectroscopic factors 0+1 states, along with previously reported p-wave intensities, s- d-wave components these two states were obtained compared shell-model calculations using various interactions. result shows...
New measurements of proton/deuteron elastic and inelastic scattering to the ${2}_{1}^{+}$ state neutron-rich nucleus $^{16}\mathrm{C}$ have been performed at Radioactive Ion Beam Line in Lanzhou (RIBLL) inverse kinematics. The angular distributions were well reproduced by systematic optical potential with normalization factors for depths real imaginary parts. neutron proton deformation lengths ${\ensuremath{\delta}}_{n}=1.25\ifmmode\pm\else\textpm\fi{}0.30$ fm...
The elastic scattering and breakup of the halo nucleus $^{11}\mathrm{Be}$ on protons at an incident energy $26.9A$ MeV have been measured. $^{11}\mathrm{Be}+p$ cross sections various energies, including present one, are systematically analyzed with Chapel Hill 89 (CH89) Koning-Delaroche (KD) global optical model potentials (OMPs), corresponding normalization factors obtained. An extended version continuum-discretized coupled-channels (XCDCC) formalism, dynamic core excitation effects, is...
The $\ensuremath{\beta}$ decay of the drip-line nucleus $^{20}\mathrm{Mg}$ gives important information on key astrophysical resonances in $^{20}\mathrm{Na}$, which are relevant to onset rapid proton capture process. A detailed $\ensuremath{\beta}$-decay spectroscopic study was performed by a continuous-implantation method. detection system specially developed for charged-particle studies, giving improved including delayed energies, half-life $^{20}\mathrm{Mg}$, excitation branching ratios,...
The elastic scattering and breakup reactions of the halo nucleus $^{11}\mathrm{Be}$ on deuterons at an incident energy $26.9A$ MeV are reported for first time. Special attention has been paid to determination subtraction proton contaminations in deuterated polyethylene ${({\mathrm{CD}}_{2})}_{n}$ target (where ${\mathrm{D}}_{2}$ denotes $^{2}\mathrm{H}_{2}$). cross sections analyzed with systematic optical potentials Daehnick et al. DA1p, as well single-folding potentials, derived from...
The mass of $^{27}$P was predicted to impact the X-ray burst (XRB) model predictions light curves and composition ashes. To address uncertainties inconsistencies in reported masses literature, a wealth information has been extracted from $\beta$-decay spectroscopy drip-line nucleus $^{27}$S. We determine most precise excess date be $-659(9)$~keV, which is 63~keV (2.3$\sigma$) higher than AME2016 recommended value $-722(26)$~keV. experimentally unknown $^{27}$S estimated 17030(400)~keV...
A resonant state at $3.{21}_{\ensuremath{-}0.04}^{+0.12}\phantom{\rule{4pt}{0ex}}\mathrm{MeV}$, located just above the one-neutron separation threshold, was observed for first time in $^{12}\mathrm{Be}$ from $^{11}\mathrm{Be}(d,p)^{12}\mathrm{Be}$ transfer reaction inverse kinematics. This is assigned a spin-parity of ${0}^{\ensuremath{-}}$ according to systematics level scheme $N=8$ isotones and decay-width analysis. Gamow coupled-channel shell-model calculations show importance continuum...
A multinucleon transfer and cluster-decay experiment, namely 9Be(13C,18O∗→14C+α)α, was performed at a beam energy of 65 MeV. Resonant states in 18O from 7 to 19 MeV, including some newly observed ones, are reconstructed with high resolution, based on the coincident detection various combinations final fragments. The α-decay branching ratios for 14 extracted both invariant-mass missing-mass measurements. Angular correlation analysis conducted 10.3-MeV (4+) state. present work supports...
$\beta$ decay of $^{26}$P was used to populate the astrophysically important $E_x=$5929.4(8) keV $J^{\pi}=3{^+}$ state $^{26}$Si. Both $\beta$-delayed proton at 418(8) and gamma ray 1742(2) emitted from this were measured simultaneously for first time with corresponding absolute intensities 11.1(12)\% 0.59(44)\%, respectively. Besides, shell model calculations weakly bound effects performed investigate properties other resonant states a spin-parity $4^+$ rather than $0^+$ favored...
The elastic scattering angular distributions were measured for 50- and 59-MeV $^{17}\mathrm{F}$ radioactive ion beam on a $^{89}\mathrm{Y}$ target. aim of this work is to study the effect breakup proton halo projectile distribution. experimental data analyzed by means optical model with double-folding S\~ao Paulo potential both real imaginary parts. theoretical calculations reproduced reasonably well. It shown that method analysis correct. In order clarify difference observed at large angles...
Xanthine can be converted into uric acid, and a high concentration of xanthine in the human body cause many diseases. Therefore, it is important to develop sensitive, simple, reliable approach for measuring biological liquids. Hence, ratiometric surface-enhanced Raman spectroscopy (SERS) sensing strategy with one signal probe was exploited reliable, quantitative monitoring serum xanthine. 3-Mercaptophenylboronic acid (3-MPBA) used as typical reference peak at 996 cm-1. First, 3-MPBA bound...
A puzzle has long existed for the $\alpha$-cluster content in near-threshold 7.54 MeV state of $^{10}$Be. new measurement was conducted to measure cluster-decay partial width this state, using reaction $\rm{^9Be}(\rm{^9Be}, \rm{^{10}Be}^{*} \rightarrow \alpha + \rm{^6He})\rm{^8Be}$ at 45 beam energy. Special measures were taken reduce strong background. The neutron-decay strength also obtained based on three-fold coincident measurement. branching ratio $(4.04 \pm 1.26)\times 10^{-4}$ is...
β decay of proton-rich nuclei plays an important role in exploring isospin mixing. The ^{26}P at the proton drip line is studied using double-sided silicon strip detectors operating conjunction with high-purity germanium detectors. T=2 isobaric analog state (IAS) 13 055 keV and two new high-lying states 380 11 912 ^{26}Si are unambiguously identified through β-delayed two-proton emission (β2p). Angular correlations protons emitted from excited populated by measured, which suggests that...
The $\ensuremath{\beta}$-delayed two-proton ($\ensuremath{\beta}2p$) decay of $^{27}\mathrm{S}$ was studied using a state-of-the-art silicon array and Clover-type HPGe detectors. An energy peak at 6372(15) keV with branching ratio 2.4(5)% in the decay-energy spectrum identified as transition via isobaric-analog state $^{27}\mathrm{P}$ to ground $^{25}\mathrm{Al}$ $\ensuremath{\beta}$ $^{27}\mathrm{S}$. Two-proton angular correlations were measured by study mechanism emission. Based on...