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Stable-plasma generators, spectroscopic measuring equipment, and methods for determining the optical properties of an extremely
heated medium with a given composition have been developed. The spectral coefficients of absorption and emission of heated
air, carbon dioxide, and argon were studied. A comparison with the data of other theoretical and experimental investigations
has been performed.
Deceased.
Institute of Molecular and Atomic Physics of the Academy of Sciences of Belarus, 70, F. Skorina Ave., Minsk, 220072, Belarus.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 6, pp. 818–826, November–December, 1997. 相似文献
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We consider a method for deriving relativistic two-body wave equations for fermions in the coordinate representation. The
Lagrangian of the theory is reformulated by eliminating the mediating fields by means of covariant Green's functions. Then,
the nonlocal interaction terms in the Lagrangian are reduced to local expressions which take into account retardation effects
approximately. We construct the Hamiltonian and two-fermion states of the quantized theory, employing an unconventional “empty”
vacuum state, and derive relativistic two-fermion wave equations. These equations are a generalization of the Breit equation
for systems with scalar, pseudoscalar, vector, pseudovector and tensor coupling. 相似文献
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K. P. Kureichik S. N. Pupkevich V. S. Granos I. S. Kharamchenkov 《Journal of Applied Spectroscopy》1999,66(5):851-854
We describe a modified GELIOS System intended to automate the atomic-absorption spectrometers AAS, S115, SATURN, and Perkin-Elmer
503. Software is prepared in the visual environment of programming DELFI-3 and functions under the control of Windows 95.
A distinguishing feature of the GELIOS System is simultaneous search for the peak and area of the absorption signal, correction
of the errors of measurements, automatic digital filtration of data, control of the time of operation of hollow-cathode lamps,
measurement of spectra and the statistical resource of the service life of hollow-cathode lamps, use of different methods
to construct a calibrating graph, the possibility of memorizing the data of the analysis in an archived file, and a formation
of the report for printing. The system contains an electrovic data directory on atomicabsorption analysis in five volumes
for 67 elements of the Mendeleev system.
To whom correspondence should be addressed.
“University” Science and Production Center, 4, F. Skorina Ave., Minsk, 220050, Belarus. Translated from Zhurnal Prikladnoi
Spektroskopii, Vol. 66, No. 5, pp. 734–737, September–October, 1999. 相似文献
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F. Heine T. Faestermann A. Gillitzer J. Homolka M. Köpf W. Wagner 《Zeitschrift für Physik A Hadrons and Nuclei》1991,340(2):225-226
In fusion reactions of58Ni beams with54Pe and58Ni target nuclei neutron deficient evaporation residues have been produced and separated from the beam in an electrostatic deflector with large acceptance. The recoil nuclei were implanted and detected in an array of 100 PIN photodiodes, where also their particle decays were recorded. The assignment of the 0.81 MeV proton line to the decay of109I could be experimentally proven by the observation, that it is followed by the 3.31 MeV alpha emission from108Te. A proton decay from112Cs was not observed. The decay energies of a number of known emitters have been measured with better precision.Dedicated to Prof. Dr. P. Kienle on the occasion of his 60th birthday 相似文献
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C N R Rao A M Umarji R A Mohan Ram R Vijayaraghavan K S Nanjunda Swamy P Somasundaram L Ganapathi 《Pramana》1988,30(4):L359-L366
Several oxides of the Bi
m
M
n
Cu
p
O
x
family (m=2, 3;n=2, 3, 4;p=1, 2, 3 and M=alkaline earth or Bi), possessing structures similar to the Aurivillius family of oxides, show highT
c superconductivity.
Contribution No. 514 from the Solid State and Structural Chemistry Unit. 相似文献
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电子原子散射中的S,T,U参数可用来描述散射前后自旋状态的变化,研究精细结构水平上的散射激发振幅之间的关系,进而揭示电子原子碰撞过程中电子自旋-轨道耦合以及电子-电子交换等自旋相关效应.采用扭曲波玻恩近似计算了钠原子受电子散射S→P跃迁中的S,T,U参数,分析了多种入射能(2.2—60 eV)的电子与钠原子激发S→P跃迁过程的S,T,U参数随散射角的分布,其中对10 eV入射能的Sp参数与已报道实验数据符合一致.结果表明,较低能电子入射下的S,T,U参数随散射角的分布幅度和起伏都比较明显,入射能大于40 eV的电子入射,S,T,U参数的散射角分布变化很小.
关键词:
散射激发
S')" href="#">S
T')" href="#">T
U参数')" href="#">U参数
散射振幅
自旋相关效应 相似文献
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Sawa Manoff 《Central European Journal of Physics》2003,1(4):669-694
The notions of centrifugal (centripetal) and Coriolis' velocities and accelerations are introduced and considered in spaces
with affine connections and metrics [
-spaces] as velocities and accelerations of flows of mass elements (particles) moving in space-time. It is shown that these
types of velocities and accelerations are generated by the relative motions between the mass elements. They are closely related
to the kinematic characteristics of the relative velocity and relative acceleration. The centrifugal (centripetal) velocity
is found to be in connection with the Hubble law. The centrifugal (centripetal) acceleration could be interpreted as gravitational
acceleration as has been done in the Einstein theory of gravitation. This fact could be used as a basis for workingout new
gravitational theories in spaces with affine connections and metrics. 相似文献