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11.
A. K. Edemskaya D. V. Naumov O. B. Samoylov 《Physics of Particles and Nuclei Letters》2011,8(7):772-775
We discuss a process of hadronization of light quarks into charged pions in e
+
e
− annihilations and in deep inelastic scatering of charged leptons and neutrino off nucleons. The corresponding semi-inclusive
cross-sections of pions production we write in terms of quark fragmentation functions and fracture functions. We suggest a
new method of measurements of fragmentation and fracture functions based on analysis of semiinclusive data. 相似文献
12.
We present our new measurement of charm dimuon production in neutrino-iron interactions based upon the full statistics collected
by the NOMAD experiment. After background subtraction we observe 15,340 charm dimuon events, providing the largest sample
currently available. The analysis exploits the large inclusive charged current sample (about 9 million events after all analysis
cuts) to constrain the total systematic uncertainty to ∼2%. The extraction of strange sea and charm production parameters
is also discussed. 相似文献
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15.
I. S. Mikhalovsky M. V. Samoylov N. P. Wileishikova 《Journal of Applied Spectroscopy》2009,76(1):127-131
IR spectroscopy is used for a comparative analysis of the trans-isomerization of double bonds in hydrocarbon residuals of lactic and hydrogenated lipids. The maximum of the absorption band
of the trans-isomers for all the lipid samples is found to lie at 965 cm−1. An absorption band at 970 cm−1 is discovered in the spectra of the lactic lipids near the analytic band of the trans-isomers at 965 cm−1. Based on a gaussian approximation for their absorption spectral bands, the trans-isomer content in the lactic lipid samples is 10–11%. The absorption by lipid molecules at 970 cm−1 has to be taken into account when determining the trans-isomer content of fat and oil products.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 76, No. 1, pp. 138–142, January–February, 2009. 相似文献
16.
A. P. Serebrov V. G. Ivochkin R. M. Samoylov A. K. Fomin V. G. Zinoviev P. V. Neustroev V. L. Golovtsov N. V. Gruzinsky V. A. Solovey A. V. Cherniy O. M. Zherebtsov V. P. Martemyanov V. G. Zinoev V. G. Tarasenkov V. I. Aleshin A. L. Petelin S. V. Pavlov A. L. Izhutov S. A. Sazontov D. K. Ryazanov M. O. Gromov V. V. Afanasiev L. N. Matrosov M. Yu. Matrosova 《Physics of Particles and Nuclei》2016,47(6):1014-1023
In connection with the question of possible existence of sterile neutrino the laboratory on the basis of SM-3 reactor was created to search for oscillations of reactor antineutrino. A prototype of a neutrino detector with scintillator volume of 400 l can be moved at the distance of 6–11 m from the reactor core. The measurements of background conditions have been made. It is shown that the main experimental problem is associated with cosmic radiation background. Test measurements of dependence of a reactor antineutrino flux on the distance from a reactor core have been made. The prospects of search for oscillations of reactor antineutrino at short distances are discussed. 相似文献
17.
Physics of Atomic Nuclei - NOvA is a neutrino experiment deployed at Fermi National Accelerator Laboratory (FNAL, USA) and designed for studying oscillations—namely, the appearance of... 相似文献
18.
A. P. Serebrov V. G. Ivochkin R. M. Samoylov A. K. Fomin V. G. Zinoviev P. V. Neustroev V. L. Golovtsov N. V. Gruzinsky V. A. Solovey A. V. Chernyi O. M. Zherebtsov V. P. Martemyanov V. G. Tsinoev V. G. Tarasenkov V. I. Aleshin A. L. Petelin S. V. Pavlov A. L. Izhutov S. A. Sazontov D. K. Ryazanov M. O. Gromov V. V. Afanasiev L. N. Matrosov M. Yu. Matrosov 《Journal of Experimental and Theoretical Physics》2015,121(4):578-586
19.
V. G. Alpatov Yu. D. Bayukov A. V. Davydov Yu. N. Isaev G. R. Kartashov M. M. Korotkov S. I. Reiman V. M. Samoylov 《JETP Letters》2004,80(1):9-11
Due to the virtual photon exchange between atomic nuclei and the field of zero-point electromagnetic oscillations, some nuclei of a given sample are in a virtual excited state with the lifetime ~?/E, where E is the energy of nuclear level. For 57Fe nuclei, whose first excited state has an energy of 14.4 keV, this time is equal to ~4.6×10?20 s. If a thin 57Fe Mössbauer gamma-ray absorber is surrounded by a thick screen of the same atoms, the number of virtual excited nuclei in the absorber decreases and, at first glance, it should more strongly absorb Mössbauer gamma rays emitted by an external source and passing through the absorber. In this work, the ratio of the intensities of 14.4-keV gamma rays emitted by the 57Fe nuclide and passing through the thin resonant absorber is measured in the absence and presence of the resonant screen around the absorber. Comparison shows that these ratios measured for the gamma source at rest and in the oscillating state differ by 0.00123±0.00075. This value should be treated as the upper limit for the desired effect under these experimental conditions. 相似文献
20.
A. M. Samoylov M. K. Sharov S. A. Buchnev A. M. Khoviv E. A. Dolgopolova 《Journal of Crystal Growth》2002,240(3-4):340-346
The comparison of the results of chemical composition, crystal structure, electronic properties and infrared photoconductivity investigations of PbTe/Si and PbTe/SiO2/Si heterostructures doped with Ga atoms by two different techniques is presented in this work. One of these techniques is principally based on the vapour-phase doping procedure of PbTe/Si and PbTe/SiO2/Si heterostructures, which were previously formed by the modified “hot wall” technique. The second method of PbTe(Ga)/Si and PbTe(Ga)/SiO2/Si heterostructure preparation is based upon the fabrication of lead telluride films, which have been doped with Ga atoms in the layer condensation process directly. The lattice parameter and charge carrier density evolutions with the Ga impurity concentration show principally the different character of PbTe(Ga)/Si films prepared by these techniques. It has been proposed that complicated amphoteric (donor or acceptor) behaviour of Ga atoms may be explained by different mechanisms of substitution or implantation of impurity atoms in the crystal structure of lead telluride. 相似文献