搜索结果: 91-105 共查到“理学 K nuclei”相关记录194条 . 查询时间(0.171 秒)
Cloud condensation nuclei in pristine tropical rainforest air of Amazonia: size-resolved measurements and modeling of atmospheric aerosol composition and CCN activity
Cloud condensation nuclei pristine tropical rainforest air Amazonia atmospheric aerosol composition CCN activity
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2009/10/13
Atmospheric aerosol particles serving as cloud condensation nuclei (CCN) are key elements of the hydrological cycle and climate. We have measured and characterized CCN at water vapor supersaturations ...
Aerosol- and updraft-limited regimes of cloud droplet formation: influence of particle number, size and hygroscopicity on the activation of cloud condensation nuclei (CCN)
Aerosol- and updraft-limited regimes cloud droplet formation cloud condensation nuclei CCN
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2009/9/27
We have investigated the formation of cloud droplets under pyro-convective conditions using a cloud parcel model with detailed spectral microphysics and with the κ-Köhler model approach for effic...
Cloud condensation nuclei measurements in the marine boundary layer of the Eastern Mediterranean: CCN closure and droplet growth kinetics
marine boundary layer Eastern Mediterranean CCN closure droplet growth kinetics
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2009/9/27
Measurements of cloud condensation nuclei (CCN) concentrations (cm−3) between 0.2 and 1.0% supersaturation, aerosol size distribution and chemical composition were performed at a remote marine s...
Properties and structure of N=Z nuclei within relativistic mean field theory
mean field theory BCS approximation binding energy
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2009/9/17
The axially deformed relativistic mean field theory with the force NLSH has been performed in the blocked BCS approximation to investigate the properties and structure of N=Z nuclei from Z=20 to Z=48....
Parameterizing the competition between homogeneous and heterogeneous freezing in ice cloud formation – polydisperse ice nuclei
heterogeneous freezing ice cloud formation polydisperse ice nuclei
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2009/8/25
This study presents a comprehensive ice cloud formation parameterization that computes the ice crystal number, size distribution, and maximum supersaturation from precursor aerosol and ice nuclei. The...
Measurements of particle masses of inorganic salt particles for calibration of cloud condensation nuclei counters
particle masses inorganic salt particles cloud condensation nuclei counters
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2009/8/25
We measured the mobility equivalent critical dry diameter for cloud condensation nuclei (CCN) activation (dc_me) and the particle mass of size-selected (NH4)2SO4 and NaCl particles to calibrate a CCN ...
Chiral doublet bands in odd-odd nuclei
chiral doublet bands pairing correlation particle rotor model
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2009/8/17
The criteria for chiral doublet bands based on one particle and one hole coupled to a triaxial rotor have been summarized. Candidate chiral doublet bands in A~100 and 130 odd-odd nuclei were checked a...
Magnetic moment measurements of mirror nuclei 12B and 12N
β-emitting mirror nuclei 12B and 12N spin polarization β-NMR nuclear magnetic moment
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2009/8/17
The spin polarized β-emitting mirror nuclei 12B(Iπ=1+,T1/2=20.18 ms) and 12N(Iπ=1+,T1/2=11 ms) are produced by the low nuclear reactions 11B(d, p) 12B and 10B(3He,n) 12N and by selecting the projectil...
Efficiency calibration of neutron detector array for β decay of exotic nuclei
neutron detector array efficiency calibration 17N 16C
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2009/8/14
The research of the in-beam efficiency calibration of Neutron Detector Array of Peking University using 17N and 16C beams was introduced in this paper. The efficiency of neutron wall and ball are comp...
Isospin effect on spontaneous fission half-lives of even-even nuclei
isospin effect WKB approximation spontaneous fission half-lives
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2009/8/14
By using a new five-parameter formula derived from the WKB approximation, we systematically calculate the spontaneous fission half-lives of even-even nuclei with Z=90—108. The isospin effect is taken...
Pair neutrino energy loss for nuclei 56Fe at the late stages of stellar evolution
Weinberg-Salam theory pair neutrino energy loss stellar evolution
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2009/8/14
Based on the Weinberg-Salam theory, the pair neutrino energy loss rates for nuclei 56Fe are canvassed for the wide range of density and temperature. The results of ours (QLJ) are compared with those o...
Outline of the progress in the study of radioactive nuclear physics and super-heavy nuclei
radioactive nuclear physics sub-barrier fusion direct reaction magic number super-heavy nuclei
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2009/8/14
We briefly introduce the current status and progress in the field of radioactive ion beam physics and the study of super-heavy nuclei. Some important problems and research directions are outlined, suc...
Scaling property in one-nucleon removal reactions induced by exotic nuclei
fragment momentum distribution few-body Glauber model
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2009/8/14
Assuming a core plus valence nucleon structure, one-nucleon removal reaction
is investigated within the framework of few-body Glauber theory. Fermi-type distribution is used for the core density, wh...
Rotational to vibrational evolution in some rotational-like nuclei
rotation vibration phase transition total Routhian surface(TRS)
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2009/8/14
The excitation spectra of nuclei in the regions 150156Gd. Also we have shown the result of the nucleus 102Ru which is given as an example of the reverse transition, i.e., vibration to rotation. The TR...
Structure study of light unbound nuclei near drip line
unbound nuclei nuclear structure resonant elastic scattering isobaric analog state
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2009/8/14
Some experimental techniques and theoretical analysis on unbound nuclei structure study are briefly introduced in this article. The unbound nuclei structure investigation can inspect the reliability o...