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We consider a method of detecting the ionizing component of solar cosmic rays (SCRs) with energy from tens of MeV to tens of GeV by measuring the energy loss of SCR protons and light nuclei in scintillators and the multiplicity of the local neutron generation in a converter. Scintillation detectors based on stilbene, lithium glass, and solid-state photomultiplier tubes are capable of detecting fast neutrons with a temporal resolution of 10 ns and rejecting the gamma-ray background in the measuring system. The method will allow investigating the nucleon components of primary SCRs in circumterrestrial space. 相似文献
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D. A. Zaikin M. V. Mordovskoy I. V. Surkova 《Bulletin of the Russian Academy of Sciences: Physics》2013,77(4):402-405
An interaction potential with a radial dependence in the Woods-Saxon form is used to describe low energy neutron data in the context of the coupled channel optical model. A single value of the diffuseness parameter was used for even-even nuclides over a wide range of A: a = 0.65 fm. Traditional and nontraditional magic and nonspherical nuclei were exceptions. The deviations can be used to find or verify the existence of nontraditional magic numbers. 相似文献
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Yu. M. Burmistrov S. V. Zuyev E. S. Konobeevski M. V. Mordovskoy S. I. Potashev I. M. Sharapov 《Bulletin of the Russian Academy of Sciences: Physics》2013,77(7):839-841
A setup installed on the RADEX neutron beam channel (Institute for Nuclear Research, Russian Academy of Sciences) and designed to study quasi-free nn scattering in the n + d → p + n + n reaction is described. The setup is a two-arm time-of-flight spectrometer composed of scintillation neutron hodoscope (in the left arm), a scintillation neutron detector (in the right arm), and an active scintillation deuterated target for detecting protons. Secondary neutrons are detected at angles corresponding to the kinematic conditions of quasi-free nn scattering. Events are selected at low energies of the outgoing proton spectator. It is shown that data on neutron-neutron quasi-free scattering can be obtained in a wide range of primary-neutron energies. 相似文献
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EP Sheretov VS Gurov MV Dubkov OV Korneeva 《Rapid communications in mass spectrometry : RCM》1999,13(16):1699-1702
In this article we compare the classical monopole mass filter of von Zahn and the monopole mass filter with a hyperbolic V-shaped electrode. The experimental results and those of computer simulation for both mass spectrometers are presented. We show that the replacement of a conventional 90 degrees V-shaped electrode by an electrode with a hyperbolic profile substantially improves the peak shape of any given mass, and increases the mass resolution by a factor of 3-4 and the abundance sensitivity by a factor of 100. The potential of high analytical performance combined with electroforming techniques for electrode manufacture indicate future practical uses of such instruments. Copyright 1999 John Wiley & Sons, Ltd. 相似文献
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Konobeevski E. S. Afonin A. A. Zuyev S. V. Kasparov A. A. Mitcuk V. V. Mordovskoy M. V. Potashev S. I. 《Physics of Atomic Nuclei》2020,83(4):523-529
Physics of Atomic Nuclei - The $${}^{1}S_{0}$$ neutron–neutron ( $$nn$$ ) scattering length was measured in the neutron–deuteron ( $$nd$$ ) breakup reaction at an energy of 60 MeV. The... 相似文献
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L.V. Fil'kov V.L. Kashevarov E.S. Konobeevski M.V. Mordovskoy S.I. Potashev V.A. Simonov V.M. Skorkin S.V. Zuev 《The European Physical Journal A - Hadrons and Nuclei》2001,12(3):369-374
The analysis of new experimental data, obtained at the Proton Linear Accelerator of INR, with the aim to search for supernarrow
dibaryons in the pd↦ppX
1 and pd↦pdX
2 reactions is presented. Narrow peaks with an experimental width of 5 MeV at masses of 1904±2, 1926±2, and 1942±2 MeV have
been observed in missing mass M
pX1 spectra. In the missing mass M
X1 spectra, the peaks at M
X1 = 966±2, 986±2, and 1003±2 MeV have been found. The analysis of the data obtained leads to the conclusion that the observed
peaks in M
pX1 spectra are most likely supernarrow dibaryons, the decay of which into two nucleons is forbidden by the Pauli exclusion principle.
An alternative interpretation of the spectra by assuming a decay of the supernarrow dibaryons in “exotic baryon states” with
masses M
X1 is discussed.
Received: 22 October 2001 / Accepted: 15 November 2001 相似文献