8 citations · 44 across the 15 of their papers we have counts for
15 papers
A method for measuring deviation from Lambert diffuse scattering law of ultracold neutrons on material walls
P. D. Grigoriev, V. D. Kochev, V. A. Tsyplukhin +2
Modeling the motion of ultracold neutrons (UCNs) is crucial for assessing their losses, accurately measuring their lifetime, and describing other experiments. In material traps, it…
Loss rate of ultracold neutrons due to the absorption by trap walls in large material traps
Pavel D. Grigoriev, Vladislav D. Kochev, Victor A. Tsyplukhin +2
The most accurate neutron lifetime measurements now use the material or magnetic traps of ultracold neutrons (UCN). The precision of these experiments is determined by the accuracy…
Improving of ultracold neutron traps coated with liquid helium using capillarity and electric field
Pavel D. Grigoriev, Arseniy V. Sadovnikov, Vladislav D. Kochev +1
To increase the storage time of ultracold neutrons (UCN) inside the material traps it is promising to cover the trap walls by liquid 4He, the material which does not absorb neutron…
On the possibility of a significant increase in the storage time of ultracold neutrons in traps coated with a liquid helium film
P. D. Grigoriev, A. M. Dyugaev, T. I. Mogilyuk +1
It is shown that rough inner walls of a trap of ultracold neutrons can be coated with a superfluid helium film much thicker than the depth of penetration of ultracold neutrons into…
Helium film may greatly increase the storage time of ultracold neutrons in material traps
P. D. Grigoriev, A. M. Dyugaev
We propose a method to increase both the neutron storage time and the precision of its lifetime measurements by at least tenfold. The storage of ultracold neutrons (UCN) in materia…
Inelastic neutron scattering as a confirmation of a new type of gapped surface excitations in liquid helium
P. D. Grigoriev, A. D. Grigoriev, A. M. Dyugaev
We analyze the experimental data on inelastic neutron scattering by a thin ~5-atomic-layer film of liquid helium at three different temperatures: T=0.4K, 0.98K and 1.3K. These data…