Quasi-specular albedo of cold neutrons from powder of nanoparticles (2009)
Cubitt, R., Lychagin, E. V., Muzychka, A. Yu., Nekhaev, G. V., Nesvizhevsky, V. V., Pignol, G., ...
We predicted and observed for the first time the quasi-specular albedo of cold neutrons at small incidence angles from a powder of nanoparticles. This albedo (reflection) is due to multiple neutron...
Test of Lorentz invariance with spin precession of ultracold neutrons (2009)
Altarev, I., Baker, C. A., Ban, G., Bison, G., Bodek, K., Daum, M., ...
A clock comparison experiment, analyzing the ratio of spin precession frequencies of stored ultracold neutrons and $^{199}$Hg atoms is reported. %57 No daily variation of this ratio could be found,...
Baeßler, S., Nesvizhevsky, V. V., Pignol, G., Protasov, K. V., Voronin, A. Yu.
In this paper, we discuss a possibility to improve constraints on spin-dependent short-range interactions in the range of 1 - 200 micrometer significantly. For such interactions, our constraints are...
Kreuz, M., Nesvizhevsky, V. V., Schmidt-Wellenburg, P., Soldner, T., Thomas, M., Boerner, H. G., ...
We present a method to measure the resonance transitions between the gravitationally bound quantum states of neutrons in the GRANIT spectrometer. The purpose of GRANIT is to improve the accuracy of...
Test of Lorentz Invariance with Spin Precession of Ultracold Neutrons (2009)
Altarev, I, Baker, CA, Ban, G, Bison, G, Bodek, K, Daum, M, ...
Storage of very cold neutrons in a trap with nano-structured walls (2008)
Lychagin, E. V., Muzychka, A. Yu., Nesvizhevsky, V. V., Pignol, G., Protasov, K. V., Strelkov, A. V.
We report on storage of Very Cold Neutrons (VCN) in a trap with walls containing powder of diamond nanoparticles. The efficient VCN reflection is provided by multiple diffusive elastic scattering of...
Ultracold-neutron infrastructure for the gravitational spectrometer GRANIT (2008)
Schmidt-Wellenburg, P., Andersen, K. H., Courtois, P., Kreuz, M., Mironov, S., Nesvizhevsky, V. V., ...
The gravitational spectrometer GRANIT will be set up at the Institut Laue Langevin. It will profit from the high ultracold neutron density produced by a dedicated source. A monochromator made of...
The reflection of very cold neutrons from diamond powder nanoparticles (2008)
Nesvizhevsky, V. V., Lychagin, E. V., Muzychka, A. Yu., Strelkov, A. V., Pignol, G., Protasov, K. V.
We study possibility of efficient reflection of very cold neutrons (VCN) from powders of nanoparticles. In particular, we measured the scattering of VCN at a powder of diamond nanoparticles as a...
Neutron scattering and extra short range interactions (2007)
Nesvizhevsky, V. V., Pignol, G., Protasov, K. V.
The available data on neutron scattering were analyzed to constrain a hypothetical new short-range interaction. We show that these constraints are several orders of magnitude better than those...
GRANIT project: a trap for gravitational quantum states of UCN (2007)
Pignol, G., Protasov, K. V., Rebreyend, D., Vezzu, F., Nesvizhevsky, V. V., Petukhov, A. K., ...
Previous studies of gravitationally bound states of ultracold neutrons showed the quantization of energy levels, and confirmed quantum mechanical predictions for the average size of the two lowest...
We derive Feynman rules for the interactions of a single gravitino with (s)quarks and gluons/gluinos from an effective supergravity Lagrangian in non-derivative form and use them to calculate the...
Experimental constraints for additional short-range forces from neutron experiments (2007)
Nesvizhevsky, V.V., Pignol, G., Protasov, K.V.
We present preliminary results on sensitivity of experiments with slow neutrons to constrain additional forces in a wide distance range: from picometers to micrometers. In the sub-nanometer range,...
Experimental constraints for additional short-range forces from neutron experiments (2007)
Nesvizhevsky, V. V., Pignol, G., Protasov, K. V.
We present preliminary results on sensitivity of experiments with slow neutrons to constrain additional forces in a wide distance range: from picometers to micrometers. In the sub-nanometer range,...
Spontaneous emission of graviton by a quantum bouncer (2007)
Pignol, G., Ptotasov, K. V., Nesvizhevsky, V. V.
Spontaneous emission of graviton rates for the quantum bouncer states are evaluated.
A note on spontaneous emission of gravitons by a quantum bouncer (2007)
Pignol, G., Protasov, K.V., Nesvizhevsky, V.V.
Spontaneous emission of graviton rates for the quantum bouncer states are evaluated.
A note on spontaneous emission of gravitons by a quantum bouncer (2007)
Pignol, G., Protasov, K.V., Nesvizhevsky, V.V.
Spontaneous emission of graviton rates for the quantum bouncer states are evaluated.
A note on spontaneous emission of gravitons by a quantum bouncer (2007)
Pignol, G., Protasov, K.V., Nesvizhevsky, V.V.
Spontaneous emission of graviton rates for the quantum bouncer states are evaluated.
New Results for Light Gravitinos at Hadron Colliders - Tevatron Limits and LHC Perspectives (2006)
We derive Feynman rules for the interactions of a single gravitino with (s)quarks and gluons/gluinos from an effective supergravity Lagrangian in non-derivative form and use them to calculate the...
Nanoparticles as a possible moderator for an ultracold neutron source (2006)
Nesvizhevsky, V.V., Pignol, G., Protasov, K.V.
Ultracold and very cold neutrons (UCN and VCN) interact strongly with nanoparticles due to the similarity of their wavelengths and nanoparticles sizes. We analyze the hypothesis that this interaction...
New results for light gravitinos at hadron colliders - Tevatron limits and LHC perspectives (2006)
We derive Feynman rules for the interactions of a single gravitino with (s)quarks and gluons/gluinos from an effective supergravity Lagrangian in non-derivative form and use them to calculate the...
Nanoparticles as a possible moderator for an ultracold neutron source (2005)
Nesvizhevsky, V. V., Pignol, G., Protasov, K. V.
Ultracold and very cold neutrons (UCN and VCN) interact strongly with nanoparticles due to the similarity of their wavelengths and nanoparticles sizes. We analyze the hypothesis that this interaction...
Nanoparticles as a possible moderator for an ultracold neutron source (2005)
Nesvizhevsky, V.V., Pignol, G., Protasov, K.V.
Ultracold and very cold neutrons (UCN and VCN) interact strongly with nanoparticles due to the similarity of their wavelengths and nanoparticles sizes. We analyze the hypothesis that this interaction...
Nanoparticles as a possible moderator for an ultracold neutron source (2005)
Nesvizhevsky, V.V., Pignol, G., Protasov, K.V.
Ultracold and very cold neutrons (UCN and VCN) interact strongly with nanoparticles due to the similarity of their wavelengths and nanoparticles sizes. We analyze the hypothesis that this interaction...