排序方式: 共有35条查询结果,搜索用时 15 毫秒
1.
A. S. Novoselov A. M. Rodin S. Motycak A. V. Podshibyakin L. Krupa A. V. Belozerov V. Yu. Vedeneyev A. V. Gulyaev A. V. Gulyaeva J. Kliman V. S. Salamatin S. V. Stepantsov E. V. Chernysheva S. A. Yukhimchuk A. B. Komarov D. Kamas 《Physics of Particles and Nuclei Letters》2016,13(5):595-597
The results of the development and the general information about the data acquisition system which was recently created at the MASHA setup (Flerov laboratory of nuclear reactions at Joint institute for nuclear research) are presented. The main difference from the previous system is that we use a new modern platform, National Instruments PXI with XIA multichannel high-speed digitizers (250 MHz 12 bit 16 channels). At this moment system has 448 spectrometric channels. The software and its features for the data acquisition and analysis are also described. The new DAQ system expands precision measuring capabilities of alpha decays and spontaneous fission at the focal plane position-sensitive silicon strip detector which, in turn, increases the capabilities of the setup in such a field as low-yield registration of elements. 相似文献
2.
A.A. Yukhimchuk V.A. Apasov Yu.I. Vinogradov A.N. Golubkov E.V. Gornostaev S.K. Grishechkin L.V. Drakin N.A. Zagoruiko V.N. Istratov P.D. Ishkov A.A. Kononenko G.I. Karyakin V.G. Klevtsov V.A. Klisch V.N. Lobanov A.P. Maksimenko S.S. Matveev A.E. Nikitin V.I. Pustovoy I.I. Sukhoi V.M. Solyankin B.N. Tenyaev V.M. Kharitonov 《Hyperfine Interactions》1999,119(1-4):341-344
A facility is described that allows safe handling of high tritium gas activity as dozens kilocuries in a regular laboratory
environment. It is used to make and deliver into the target a mixture of specific isotopic composition with the contamination
requirement of 10-7 v.f. for Z>1 elements, and recover it upon completion of operation. With this facility, efforts have been accomplished to investigate
into the muon catalyzed fusion on two targets – liquid tritium and high-pressure tritium types. Also, the operation range
was 0.1–120 MPa for pressure and 20–800 K for temperature and the amount of tritium used was about 100 kCi. The facility showed
reliability in operation without indications of radiation beyond the safety level.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
3.
M. A. Mochalov R. I. Il’kaev V. E. Fortov A. L. Mikhailov Yu. M. Makarov V. A. Arinin A. O. Blikov A. Yu. Baurin V. A. Komrakov V. A. Ogorodnikov A. V. Ryzhkov E. A. Pronin A. A. Yukhimchuk 《Journal of Experimental and Theoretical Physics》2012,115(4):614-625
The quasi-isentropic compressibility of helium and deuterium plasmas at pressures of up to 1500?C2000 GPa has been measured using devices with spherical geometry and an X-ray diagnostic complex comprising three betatrons and a multichannel imaging system with electro-optic gamma detectors. A deuterium density of 4.5 g/cm3 and a helium density of 3.8 g/cm3 have been obtained at pressures of 2210 and 1580 GPa, respectively. The internal energy of a deuterium plasma at the indicated pressure is about 1 MJ/cm3, which is about 100 times greater than the specific energy of condensed chemical explosives. Analysis of the obtained data shows that the degree of helium ionization under the achieved plasma compression parameters is about 0.9. 相似文献
4.
The paper presents a schematic design of a Tritium Fuel Cycle for Muon-Catalyzed Intense Neutron Source (MC INS) capable of
producing 14 MeV neutrons. Based on the assumption that the fuel mixture should be used in a liquid phase different approaches
are proposed to incorporate a DT cell (synthesizer) into the MC INS facility. Estimations of the total tritium inventory in
the MC INS facility are given. The calculations of the DT cell operation temperature regime using the code FLOW-3D(R) are presented. The capability to remove the thermal energy released in the DT cell of the proposed design is shown. The MC
INS design is analyzed from the viewpoint of tritium safety requirements.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
5.
V. R. Bom J. N. Bradbury D. L. Demin C. W. E. van Eijk V. V. Filchenkov N. N. Grafov V. G. Grebinnik K. I. Gritsaj A. D. Konin A. V. Kuryakin V. A. Nazarov V. V. Perevozchikov A. I. Rudenko S. M. Sadetsky Yu. A. Vinogradov A. A. Yukhimchuk S. A. Yukhimchuk V. G. Zinov S. V. Zlatoustovskii 《Hyperfine Interactions》2001,138(1-4):313-319
Muon catalyzed fusion in deuterium was studied by the MCF collaboration at JINR phasotron. The measurements were carried out
with a high-pressure deuterium target at the JINR phasotron in the temperature range 300–800 K at densities ≃0.5 LHD. The
first experimental results for ddμ-molecule formation rate λ
ddμ in the temperature range 400–800 K with deuterium density 0.5 LHD are presented.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
6.
L. N. Bogdanova D. L. Demin V. N. Duginov V. V. Filchenkov K. I. Gritsaj A. D. Konin T. N. Mamedov A. I. Rudenko V. A. Stolupin Yu. I. Vinogradov V. P. Volnykh A. A. Yukhimchuk 《Physics of Particles and Nuclei Letters》2012,9(8):605-614
By means of muon catalysis we study the phenomena in a pt-fusion, which have been previously investigated in the only experiment and now are at the frontier of nuclear few-body physics. The experiment is aimed at measuring the yields of the reaction products: ??-quanta, conversion muons and e + e ? pairs. As a result we plan to measure the pt-fusion partial product yields (first time for e + e ? pairs) with accuracy not worse than 10%, and this will enable us to obtain the nuclear reaction rates in M1 and E0 transitions in A = 4 system. 相似文献
7.
Equilibrium pressures of protium and deuterium desorption over a two-phase area of monohydride-vanadium dihydride were measured.
Temperature measurement range was 300–635 K and the pressure range 1–500 MPa. Obtained temperature-dependences of fugacities
within the given measurement range are: lgf(MPa) = −2152/T+ 6.6 and lgf(MPa) = −2575/T + 7.4 for protium and deuterium, respectively. The values of enthalpy and entropy for vanadium dihydride phase formation
were calculated from obtained relations. Using expressions obtained for fugacities and literature data on hydrogen imperfection
the pressures, which can be obtained with vanadium dihydride employed in thermodesorption hydrogen sources, were estimated.
Taking into account that due to deterioration in strength properties of the used structural materials, the heating temperature
of the load-bearing body is limited to ∼973 K, maximal calculated pressure, which can be obtained with such sources as ≈1820
MPa for protium and ≈2220 MPa for deuterium.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
8.
The present paper reviews the research equipment and techniques previously and currently under development in RFNC-VNIIEF
to perform studies in such fundamental areas as muon catalyzed fusion, exotic quantum systems at the stability boundary, measuring
magnetic moment of neutrino, etc.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
9.
Calculation of equilibrium composition and establishing time in a mixture of three hydrogen isotopes
N.S. Ganchuk A.N. Golubkov D.A. Kreknin L.I. Ponomarev A.A. Selezenev A.A. Yukhimchuk 《Hyperfine Interactions》1999,119(1-4):357-360
A mathematical model describing the kinetics of establishing equilibrium is developed. Equilibrium concentrations of isotopic
molecules for gas mixtures used in muon catalyzed fusion research are calculated.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
10.
V. R. Bom D. L. Demin C. W. E. van Eijk V. V. Filchenkov N. N. Grafov V. G. Grebinnik K. I. Gritsaj A. D. Konin A. V. Kuryakin V. A. Nazarov V. V. Perevozchikov A. I. Rudenko S. M. Sadetsky Yu. I. Vinogradov A. A. Yukhimchuk S. A. Yukhimchuk V. G. Zinov S. V. Zlatoustovskii 《Journal of Experimental and Theoretical Physics》2003,96(3):457-464
Muon catalyzed fusion (MCF) in deuterium was studied by the MCF collaboration on the Joint Institute for Nuclear Research Phasotron. The measurements were carried out with a high-pressure deuterium target in the temperature range 85–790 K at densities of about 0.5 and 0.8 of the liquid hydrogen density. The first experimental results for the ddμ molecule formation rate λ ddμ in the temperature range 400–790 K with a deuterium density of about 0.5 of the liquid hydrogen density are presented. 相似文献