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排序方式: 共有77条查询结果,搜索用时 15 毫秒
1.
CV Tomy D Pal SS Banerjee S Ramakrishnan AK Grover S Bhattacharya MJ Higgins G Balakrishnan McK Paul 《Pramana》2002,58(5-6):925-935
The weakly pinned single crystals of the hexagonal 2H-NbSe2 compound have emerged as prototypes for determining and characterizing the phase boundaries of the possible order-disorder
transformations in the vortex matter. We present here a status report based on the ac and dc magnetization measurements of
the peak effect phenomenon in three crystals of 2H-NbSe2, in which the critical current densities vary over two orders of magnitude. We sketch the generic vortex phase diagram of
a weakly pinned superconductor, which also utilizes theoretical proposals. We also establish the connection between the metastability
effects and pinning. 相似文献
2.
A new scheme is presented for the physical processes leading to the nuclear fusion reaction d(3He, 4He)p catalyzed by a negatively charged muon μ−. It is shown that the observable rate and yield of the nuclear reaction depend on a chain of ion-molecular reactions involving
the participation of the dμ 3He molecule. New calculations of the nuclear fusion rates in the dμ3He molecule are presented.
Pis’ma Zh. éksp. Teor. Fiz. 67, No. 2, 89–94 (25 January 1998)
Published in English in the original Russian journal. Edited by Steve Torstveit. 相似文献
3.
L. M. Gershtein 《Ukrainian Mathematical Journal》1993,45(10):1629-1635
The paper deals with the Cauchy problem for a complete second-order differential equation with unbounded operator coefficientsu+A(t)u+B(t)u=f, u(0)=u0, u(0)=u
1
. By using the commutant method, we construct a coercive solution of this problem in Holder space in the case where the operatorB is as strong as the operator A2.Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 45, No. 10, pp. 1449–1454, October, 1993. 相似文献
4.
S. S. Gershtein A. A. Likhoded Yu. D. Prokoshkin 《Zeitschrift fur Physik C Particles and Fields》1984,24(3):305-308
The scalar mesonG(1590) is considered as a possible glueball. The decay mechanism, characteristic of a glueball, is proposed (the discolouring of gluons by gluons) which allows one to understand the increase ofG→ηη decay rate, as compared to the decaysG→ππ andG→K \(\bar K\) observed in the experiment. It is proposed to measure the ratio of branching ratiosR=BR(G→ηη′)/BR(G→ηη), which is sensitive to the gluon content ofG(1590). In the one-pion exchange model the predictedR values are within the range:2?R?3.7. 相似文献
5.
The question of a possible existence of the “baroleptons” (leptoquarks) at the TeV energy scale is considered. Leptoquark mass and coupling bounds coming from rare meson decays are briefly reviewed. 相似文献
6.
7.
L. M. Gershtein 《Ukrainian Mathematical Journal》1989,41(7):768-774
Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 41, No. 7, pp. 898–905, July, 1989. 相似文献
8.
In subnormal glow discharge under d.c. excitation at different pressure in a varying transverse magnetic field (0 to 30 G)
some measurements have been carried out for various initial average tube currents. The voltage across the discharge increases
and average tube current and residual current decreases in the magnetic field. With the help of Beckman’s expression [4] for
the axial field and the electron density distribution in a transverse magnetic field the observed variation of current and
voltage can be satisfactorily explained. The variation of axial electric field with transverse magnetic field can be represented
to a fair degree of accuracy by the derived equation. The behaviour of residual current with magnetic field has been observed
in these oscillations. 相似文献
9.
An integral equation formulation for buoyancy-driven convection problems is developed and illustrated. Buoyancy-driven convection in a bounded cylindrical geometry with a free surface is studied for a range of aspect ratios and Nusselt numbers. The critical Rayleigh number, the nature of the cellular motion, and the heat transfer enhancement are computed using linear theory. Green's functions are used to convert the linear problem into linear Fredholm integral equations. Theorems are proved which establish the properties of the eigenvalues and eigenfunctions of the linear integral operator which appears in these equations. 相似文献
10.