A5103367302- Atomic and Molecular Physics
- Laser-induced spectroscopy and plasma
- Advanced Chemical Physics Studies
- Luminescence Properties of Advanced Materials
- Cold Atom Physics and Bose-Einstein Condensates
- Solid State Laser Technologies
- Laser-Matter Interactions and Applications
- Nuclear physics research studies
- Quantum optics and atomic interactions
- X-ray Spectroscopy and Fluorescence Analysis
- Atomic and Subatomic Physics Research
- Glass properties and applications
- Spectroscopy and Laser Applications
- Photorefractive and Nonlinear Optics
- Laser Design and Applications
- Laser-Plasma Interactions and Diagnostics
- Advanced MRI Techniques and Applications
- Mass Spectrometry Techniques and Applications
- Advanced NMR Techniques and Applications
- Terahertz technology and applications
- Analytical chemistry methods development
- Functional Brain Connectivity Studies
- Random lasers and scattering media
- Advanced Neuroimaging Techniques and Applications
- Smart Parking Systems Research
Jiangsu University
2024
Jilin University
2003-2014
Ministry of Education of the People's Republic of China
2011
Jilin Medical University
2006-2011
Yantai University
2004-2007
Lund University
1982-2003
China Center of Advanced Science and Technology
1993-1995
From a copper target, laser-ablated plasma was investigated by spectral- and temporal-resolved emission spectroscopy. With the presence of 0.8 T steady magnetic field, expanding showed significant enhancements spectral lines for all neutral, singly, doubly ionized species. The relative different species have been studied with measurement comparing spectra obtained without field. enhanced from plume is attributed to an increase radiative recombination rate in due confinement. temporal...
Radiative lifetimes of nine levels in Eu II (4f7 6p, 4f6 5d6s and 5d2 ) III (4f6 5d) have been measured using time-resolved laser-induced fluorescence spectroscopy on a laser-produced europium plasma. Oscillator strengths for number lines derived by combining the with branching ratios emission spectrum hollow-cathode lamp.
The ultraviolet and violet upconverted luminescence around 320, 410, 470 nm in ${\mathrm{Er}}^{3+}$-doped yttrium aluminum garnet has been observed at room temperature with a tunable OPO laser excitation. upconversion mechanisms upon ${}^{4}{S}_{3/2}$ excitation $(\ensuremath{\approx}545 \mathrm{nm})$ are investigated by means of the decay profiles upconvered spectrum. It appears that, depending on excited wavelength, is dominantly contributed either energy-transfer or excited-state...
Natural radiative lifetimes of the states in highly perturbed 5${\mathit{d}}^{10}$np $^{2}$P sequence neutral gold, Au i, for n=6--9, as well four perturbing 5${\mathit{d}}^{9}$6s6p states, have been measured. This was done by direct excitation from ground state with short-pulse vacuum-ultraviolet laser light and time-resolved detection laser-induced fluorescence. We found to be \ensuremath{\tau}(6p $^{2}$${\mathit{P}}_{1/2}$)=6.2(2) ns, $^{2}$${\mathit{P}}_{3/2}$)=4.7(2)...
Natural radiative lifetimes have been determined in the $5snd^{1,3}D_{2}$ sequences of strontium perturbed region around $n=15$. Stepwise laser excitations and pulse modulation a cw dye-laser beam were employed. A plot measured lifetime values versus effective quantum number reveals complex configuration interaction.
New radiative lifetimes of 18 levels (energy range between 30 000 cm-1 and 39 cm-1) in Ce II have been measured using the time-resolved laser-induced fluorescence method. A tunable frequency-doubled dye laser with 1 ns pulse duration was used to excite selectively singly ionized cerium a laser-produced plasma. The experimental results are compared theoretical data agreement is found be very good.
Radiative lifetimes of 30 excited states Er II, ranging in energy from 25 592 to 36 148 cm−1, have been measured by means a time-resolved laser-induced fluorescence (LIF) technique. Free, singly ionized erbium ions were produced plasma. A tunable laser, with 1 ns duration pulse, was employed selectively excite the Er+ ions. The lifetime values evaluated transient LIF signals recorded fast detection system. comparison new results previously published is given. HFR calculations, including...
Lifetimes for nine levels and Land\'e ${g}_{J}$ factors eight of the $5p7p$ configuration neutral tin have been measured by time-resolved fluorescence method Zeeman quantum beat technique, respectively. A two-step laser excitation technique has used measurements. The results obtained are compared with relativistic Hartree-Fock lifetime values taking core-polarization effects into account.
New radiative lifetimes, measured by time-resolved laser-induced fluorescence spectroscopy, are reported for five Rydberg states of singly ionized ytterbium. Free Yb+ ions were produced in a plasma. The experimental results have been compared with HFR calculations, taking core-polarization effects into account, and good agreement (within 25%) between theory experiment is observed four levels. also proposed np (n ≤ 7) nf 8) available data.
Radiative lifetimes have been reported for 32 odd-parity levels of neutral lanthanum using a time-resolved laser-induced fluorescence technique in an atomic beam produced by laser ablation. The energies these are the range 23,874 to 37,982 cm−1. Among measured results, best our knowledge, 23 first time. These lifetime values obtained this paper, generally with uncertainties less than ±10%, 7.3 247 ns. results good agreement previously data within experimental errors.
Lifetime determinations for eleven levels in La II and two III have been performed using time-resolved laser spectroscopy. Free La+ La++ ions were produced a laser-induced plasma selective excitation was obtained with narrow-bandwidth, 1 ns duration tunable pulses. values evaluated from the fluorescence signals recorded by fast detection system. The data are believed to be first ones doubly charged lanthanide ion results compared previous measurements other authors.
Time-resolved laser-induced fluorescence measurements have been performed for ten odd Rydberg states of neutral lutetium, belonging to the 6s2 (1S)np (n = 8– 9) and (1S)nf 5–8) series. For (1S)8p (1S)7f, experimental lifetimes corresponding two J values within doublet differ substantially. Comparison with theoretical values, calculated extensive configuration interaction core-polarization effects included, shows that trends are adequately reproduced both np nf 5– 8) states.
Radiative lifetimes of 94 high-lying even-parity levels from 29 717.231 to 41 692.155 cm−1 Gd i and 10 38 057.954 49 291.082 ii, have been measured using time-resolved laser-induced fluorescence method. The lifetime values range 7.1 220 ns for 5.2 47.4 ii. Most results reported here lie within the uncertainty ±5 per cent. Free neutral singly ionized gadolinium atoms were generated by laser ablation. second harmonic different dye lasers was employed as tunable UV exciting source (242–337 nm)...
Natural radiative lifetimes of 25 even-parity levels in Gd I (4f75d26p, 4f75d6s6p and 4f85d6s configurations) 13 II (4f75d6p 4f76s6p have been measured using the time-resolved laser-induced fluorescence technique a gadolinium plasma. The range energy from 26 866 to 36 395 cm−1, 960 42 746 respectively. In measurements, stimulated Brillouin scattering techniques were employed produce 1 ns laser pulses enable accurate measurements short-lived states. uncertainty is, with few exceptions, about ±5%.