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31.
D. I. Zavershinskii N. E. Molevich S. Yu. Pichugin D. S. Ryashchikov 《Bulletin of the Lebedev Physics Institute》2017,44(10):298-302
Linear equations and dispersion relations describing the condensation mode in weakly ionized plasma with heat release, being in an external magnetic field, are derived. The conditions of the instability onset of the condensation mode of the ion component are found. 相似文献
32.
Konstantin Nikolaevich Pichugin Mihal Pudlak Rashid Giyasovich Nazmitdinov 《The European Physical Journal B - Condensed Matter and Complex Systems》2014,87(6):1-10
We report a study of the normal and superconducting state properties of the Ti x V1?x alloys for x = 0.4, 0.6, 0.7 and 0.8 with the help of dc magnetization, electrical resistivity and heat capacity measurements along with the electronic structure calculation. The superconducting transition temperature T c of these alloys is higher than that of elemental Ti and is also higher than elemental V for x ≤ 0.7. The roles of electron density of states, electron-phonon coupling and spin fluctuations in the normal and superconducting state properties of these alloys have been investigated in detail. The experimentally observed value of T c is found to be considerably lower than that estimated on the basis of electron density of states and electron-phonon coupling in the x = 0.4, 0.6 and 0.7 alloys. There is some evidence as well for the preformed Cooper pair in all these Ti-V alloys in the temperature regime well above T c . Similar to x = 0.6 [Md. Matin, L.S. Sharath Chandra, R.K. Meena, M.K. Chattopadhyay, A.K. Sinha, M.N. Singh, S.B. Roy, Physica B 436, 20 (2014)], the normal state properties of the x = 0.4 alloy showed the signature of the presence of spin fluctuations. The difference between the experimentally observed T c and that estimated by considering electron density of states and electron-phonon coupling in the x = 0.4, 0.6 and 0.7 alloys is attributed to the possible influence of these spin fluctuations. We show that the non-monotonous variation of T c as a function of x in the Ti x V1?x alloys is due to the combined effects of the electron-phonon coupling and the spin fluctuations. 相似文献
33.
E. V. Korotaev N. N. Peregudova L. N. Mazalov V. V. Sokolov A. V. Kalinkin N. A. Kryuchkova Yu. P. Dikov M. I. Buleev I. Yu. Filatova A. Yu. Pichugin 《Journal of Structural Chemistry》2013,54(1):255-258
2p 3/2,1/2 Photoelectron spectra of single crystalline specimens of chromium-copper disulfides CuCrS2 and CuCr0.85V0.15S2 are studied. It is shown that the spectra of single crystalline specimens substantially differ from the corresponding spectra of chromium-copper disulfides in the powder state. 相似文献
34.
The Ga1–x
In
x
As compound obtained by In-ion implantation (100 keV and (0.45–6)·1017 cm–2) followed by thermal (800 °C and 15') or high-energy electron-beam (1 MeV, 0.6 mA·cm–2, 660 °C, and 16 s) annealing is investigated by Rutherford backscattering, optical absorption, and capacitor photoelectromotive force. It is shown that x increases from 0.07 up to 0.21, and the band gap decreases from 1.34 down to 1.21 eV as the implantation dose increases. The surface potential decreases from 0.79 down to 0.58 V. A high efficiency of electron-beam annealing is pointed out. 相似文献
35.
A chemical H2–F2 laser (oscillator and amplifier) initiated by means of IR radiative excitation of vibrational levels of HF molecules is studied under the conditions of development of a thermal-branched chain reaction caused by thermal dissociation of gaseous additions to the laser mixture. It is shown that, using F2SO3 addition at a partial pressure of 40 Torr, an H2–F2 laser with a mixture pressure of 1~bar initiated by a pulsed hydrogen fluorine laser can provide an output exceeding 120–200 J/liter in 20–50 ns laser pulses. 相似文献
36.
The attenuation of 10.6-μm radiation by aluminum aerosol particles dispersed in argon is studied experimentally. An optimal method of forming the initiating beam is found. The size and concentration of fine Al particles in the medium are estimated. 相似文献
37.
38.
39.
New values of a number of kinetic constants of processes proceeding in oxygen-iodine laser media are presented. The total
probabilities of formation of I2(X, 15 ≤ v ≤ 24) and I2(X, 25 ≤ v ≤ 47) molecules in the course of quenching of I* atoms by I2(X) are found to be 0.9 and 0.1, respectively. The quantum yield of singlet oxygen in the reaction O(1
D) + N2O → N2 + O2(a
1Δ) is close to 100%. The quenching rate constants of I2(A’) by O2, H2O, CO2, I2, and Ar and of I(2
P
1/2) by O(3
P), O3, NO2, N2O4, and N2O are presented. 相似文献
40.