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1.
Lebedev V. T. Serebrov A. P. 《Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques》2020,14(1):1-5
Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques - A method for studying the magnetic dynamics of endofullerenes M@C2n (2n = 60, 70, …) and their derivatives,... 相似文献
2.
JETP Letters - New measurements of the flux and spectrum of reactor antineutrinos as functions of the distance from the center of the core of the SM-3 reactor (Dimitrovgrad, Russia) in the range of... 相似文献
3.
Technical Physics - At present, the experiment on measuring neutron lifetime using a big gravitational trap is being performed at Petersburg Nuclear Physics Institute. It is planned to achieve a... 相似文献
4.
E. B. Aleksandrov M. V. Balabas S. P. Dmitriev N. A. Dovator A. I. Ivanov I. A. Krasnoshchekova V. N. Kulyasov V. V. Marchenkov A. S. Pazgalev A. P. Serebrov V. A. Soloveĭ G. E. Shmelev 《Technical Physics》2007,52(3):389-391
Experiments aimed to determine the sensitivity and the optical shift of the output frequency of a magnetometer based on optical pumping of cesium atoms and intended for a neutron magnetic resonance stabilization system are described. A gradiometric arrangement used in these experiments makes it possible to reduce the effect of magnetic field variations on measurements. 相似文献
5.
A high-intensity source of ultracold neutrons (UCNs) and very cold neutrons is being developed based on the WWR-M operating
research reactor at the St. Petersburg Nuclear Physics Institute for research in the field of fundamental physics and nanostructures.
Superfluid helium will be used in this source, which should yield a UCN density of 104 cm−3, which exceeds the density of the currently existing UCN sources (throughout the world) by three orders of magnitude. Having
possessed the most intense UCN source, the WWR-M reactor will become an international center of UCN-based fundamental research. 相似文献
6.
V. E. Varlamov V. V. Nesvizhevskii A. P. Serebrov R. R. Tal’daev A. G. Kharitonov P. Geltenbort Ts. Ts. Panteleev A. V. Strelkov V. N. Shvetsov M. Pendlebury K. Schreckenbach 《Journal of Experimental and Theoretical Physics》1998,87(3):426-432
The temperature dependence of the loss factor for ultracold neutrons owing to heating at thermal energies on the surface of
a beryllium sample is studied. The probability of heating ultracold neutrons is anomalously high throughout the entire measured
temperature interval, but especially at low temperatures.
Zh. éksp. Teor. Fiz. 114, 786–797 (September 1998) 相似文献
7.
Observation of the penetration of subbarrier ultracold neutrons through beryllium foils and coatings
V. E. Varlamov V. V. Nesvizhevskii A. P. Serebrov R. R. Tal’daev A. G. Kharitonov P. Geltenbort M. Pendlebury A. V. Strelkov V. N. Shvetsov K. Schreckenbach 《JETP Letters》1997,66(5):336-343
The subbarrier passage of ultracold neutrons through beryllium foils and coatings with a probability much higher than that
of tunneling is observed. This effect may be responsible for the so-called anomalous loss of ultracold neutrons.
Pis’ma Zh. éksp. Teor. Fiz. 66, No. 5, 317–322 (10 September 1997) 相似文献
8.
I. S. Altarev Yu. V. Borisov A. B. Brandin V. F. Ezhov S. N. Ivanov G. K. Kunstman V. M. Lobashev V. A. Nazarenko V. L. Ryabov A. P. Serebrov R. R. Taldaev 《Physics letters. A》1980,80(5-6):413-416
A liquid hydrogen source of ultra-cold neutrons (UCN) developed for an experimental search for the electric dipole moment of the neutron is described. The results of an investigation of the yield of UCN from gaseous, liquid, and solid hydrogen as a function of temperature are presented. The UCN counting rate obtained at the output of the 6 × 7 cm2 neutron guide tube is 5 × 104 n/s. This counting rate corresponds to a flux of neutrons whose velocity along the axis of the neutron guide tube is below 7 m/s. Preliminary measurements of the UCN yield from liquid and solid deuterium have been carried out. 相似文献
9.
A. P. Serebrov A. K. Fomin A. G. Kharitonov V. A. Lyamkin D. V. Prudnikov S. A. Ivanov A. N. Erykalov M. S. Onegin K. A. Gridnev 《Crystallography Reports》2016,61(1):144-148
It is proposed to equip the PIK and WWR-M research reactors at the Petersburg Nuclear Physics Institute (PNPI) with high-density ultracold neutron (UCN) sources, where UCNs will be obtained based on the effect of their accumulation in superfluid helium (due to the specific features of this quantum fluid). The maximum UCN storage time in superfluid helium is obtained at temperatures on the order of 1 K. These sources are expected to yield UCN densities of 103–104 cm–3, i.e., approximately three orders of magnitude higher than the density from existing UCN sources throughout the world. The development of highest intensity UCN sources will make PNPI an international center of fundamental UCN research. 相似文献
10.
A. P. Serebrov A. K. Fomin A. G. Kharitonov V. E. Varlamov E. A. Kolomenskiy I. A. Krasnoshchekova A. V. Chechkin 《Crystallography Reports》2016,61(1):139-143
Currently, the best accuracy of neutron lifetime measurements has been attained in the experiment with a gravitational trap for ultracold neutrons (UCNs), performed at the Petersburg Nuclear Physics Institute (PNPI); the measured lifetime was 878.5 ± 0.8 s. A new setup with a big gravitational trap has been designed to continue the methods and approaches used in the previous experiment. It is planned to reduce the measurement error to 0.2 s, i.e., improve the existing accuracy by a factor of 4. The spectrometer was designed at PNPI and installed on the PF2/MAM beam at the Institute Laue–Langevin. Test experiments have been performed. 相似文献