Search Results - "Avakian, R.O"

Results on the coherent interaction of high energy electrons and photons in oriented single crystals by Apyan, A., Avakian, R.O., Badelek, B., Ballestrero, S., Biino, C., Birol, I., Cenci, P., Connell, S.H., Eichblatt, S., Fonseca, T., Freund, A., Gorini, B., Groess, R., Ispirian, K., Ketel, T.J., Kononets, Yu.V., Lopez, A., Mangiarotti, A., van Rens, B., Sellschop, J.P.F., Shieh, M., Sona, P., Strakhovenko, V., Uggerhøj, E., Uggerhøj, U.I., Unel, G., Velasco, M., Vilakazi, Z.Z., Wessely, O.

“…The CERN-NA-59 experiment examined a wide range of electromagnetic processes for multi-GeV electrons and photons interacting with oriented single crystals. The…”
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Radiation produced by 20MeV electrons channeled in the crystallographic planes of quartz with and without periodic deformations by Avakian, R.O., Ispirian, K.A., Yaralov, V.J.

“…Potentials, energy levels, their linewidths and spectral distributions of radiation produced by 20MeV electrons channeled in the crystallographic planes of…”
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Investigation of the channeling radiation in periodically deformed crystals by non-linear optics methods by Avakian, R.O., Ispirian, K.A., Yaralov, V.J.

“…The quantum formalism for computation of the spectral distributions of the radiation produced by relativistic electrons channeled in harmonically deformed…”
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Method for preparation of crystalline undulators by Avakian, R.O, Avetyan, K.T, Ispirian, K.A, Melikyan, E.G

“…It is proposed to create crystalline undulators (CU) with periodically deformed crystallographic planes using the curvature due to the alternating stresses…”
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Bent crystallographic planes in gradient crystals and crystalline undulators by Avakian, R.O., Avetyan, K.T., Ispirian, K.A., Melikian, E.G.

“…It is shown that in constant gradient crystals, for instance, in Ge x Si 1− x , the crystallographic planes perpendicular to the direction of the variation of…”
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Spontaneous and stimulated radiation of particles in crystalline and nanotube undulators by Avakian, R.O., Gevorgian, L.A., Ispirian, K.A., Ispirian, R.K.

“…In this paper, we are investigating the influence of the medium polarization on the radiation produced by the channeled positive particles in crystalline…”
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Radiation of particles in undulators with straight sections taking into account the medium polarization by Avakian, R.O., Gevorgian, L.A., Ispirian, K.A., Shamamian, A.H.

“…In some undulators, in particular, in the recently proposed crystalline undulators the particle trajectories after each bending can have straight sections of…”
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Coherent bremsstrahlung, coherent pair production, birefringence, and polarimetry in the 20–170 GeV energy range using aligned crystals by Apyan, A., Avakian, R. O., Badelek, B., Ballestrero, S., Biino, C., Birol, I., Cenci, P., Connell, S. H., Eichblatt, S., Fonseca, T., Freund, A., Gorini, B., Groess, R., Ispirian, K., Ketel, T. J., Kononets, Yu. V., Lopez, A., Mangiarotti, A., van Rens, B., Sellschop, J. P. F., Shieh, M., Sona, P., Strakhovenko, V., Uggerhøj, E., Uggerhøj, U. I., Unel, G., Velasco, M., Vilakazi, Z. Z., Wessely, O.

“…The processes of coherent bremsstrahlung (CB) and coherent pair production (CPP) based on aligned crystal targets have been studied in the energy range 20-170…”
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Measuring the linear polarization of γs in 20–170 GeV range by Ünel, Gökhan

“…The Na59 collaboration aims to measure the linear polarization of its photon beam in the 20–170 GeV range, using an aligned thin crystal. The tracks of e −/ e…”
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Generation and detection of the polarization of multi-GeV photons by use of two diamond crystals by Kirsebom, K, Kononets, Yu.V, Mikkelsen, U, Møller, S.P, Uggerhøj, E, Worm, T, Elsener, K, Biino, C, Ballestrero, S, Sona, P, Avakian, R.O, Ispirian, K.A, Taroian, S.P, Connell, S.H, Sellschop, J.P.F, Vilakazi, Z.Z

“…Presented are experimental results for the difference in pair production probability (the asymmetry) for 5–150 GeV photons polarized parallel and perpendicular…”
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Improved crystal method for photon beam linear polarization measurement at high energies by Apyan, A.B., Avakian, R.O., Darbinian, S.M., Ispirian, K.A., Taroian, S.P., Mikkelsen, U., Uggerhoj, E.

“…A method for photon linear polarization determination based on the measurement of the asymmetry of pairs produced by polarized photons in single crystals…”
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Method for determination of photon polarization at energies ω > 50 GeV by measuring coherent photoproduction of e +e - pairs in single crystals by Avakian, R.O., Darbinian, S.M., Ispirian, K.A., Ispirian, M.K., Taroian, S.P.

“…The total absorption coefficients W ˔ and W ∣ for high energy γ-quanta polarized perpendicularly and in parallel to the plane containing photon momentum and…”
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Charge asymmetry in 1–1000 GeV electromagnetic showers and the possibility of its measurement by Avakian, R.O, Ispirian, K.A, Ispirian, R.K, Khachatryan, V.G, Sona, P, Uggerhoj, E

“…For high energy electromagnetic showers (EMS), the thickness dependence of (a) the development of electron and positron components, (b) the difference between…”
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Production of positron beams with energies Ee +⩾0.2 GeV by 4.5 GeV electrons in amorphous and crystalline converters by Aganiants, A.O, Akopov, N.Z, Apyan, A.B, Avakian, R.O, Avetissian, A.E, Boyakhdjian, E.M, Danagulian, S.S, Ispirian, K.A, Sukiasian, Yu.Z, Taroyan, S.P, Skhtoryan, Ye.M, Yaralov, V.A

“…To carry out experimental investigation of radiation of positrons in crystalline undulators at the Yerevan synchrotron it is necessary to produce 0.2–2 GeV low…”
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Enhanced electromagnetic showers initiated by 20–180 GeV gamma rays on aligned thick germanium crystals by Baurichter, A., Kirsebom, K., Medenwaldt, R., Mikkelsen, U., Møller, S.P., Uggerhøj, E., Worm, T., Kononets, Y.V., Elsener, K., Ballestrero, S., Sona, P., Biino, C., Connell, S.H., Sellschop, J.P.F., Vilakazi, Z.Z., Apyan, A., Avakian, R.O., Ispirian, K.A., Taroian, S.P.

“…The distribution of the energy released in a silicon detector placed on the downstream side of thick germanium single crystals bombarded by 20–180 GeV gamma…”
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Circularly polarized photon beams produced by channeled longitudinally polarized electrons by Apyan, A.B., Avakian, R.O., Bosted, P.O., Darbinian, S.M., Ispirian, K.A.

“…The spectral distributions and polarization of the radiation of electrons with longitudinal polarization when they move in parallel to crystallographic planes…”
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Pair production by 5–150 GeV photons in the strong crystalline fields of germanium, tungsten and iridium by Kirsebom, K., Kononets, Yu.V., Mikkelsen, U., Møller, S.P., Uggerhøj, E., Worm, T., Biino, C., Elsener, K., Ballestrero, S., Sona, P., Connell, S.H., Sellschop, J.P.F., Vilakazi, Z.Z., Apyan, A., Avakian, R.O., Ispirian, K.

“…Experimental results for pair production by 20–150 GeV photons in a Ge crystal cooled to 100 K are presented. The results include total and differential…”
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X-ray radiation and optics investigations at the YerPhI linac test facility (LTF) by Avakian, R.O., Ispirian, K.A., Laziev, E.M., Mkrtchyan, R.L., Nikogosian, V.Ts

“…The 20–40 MeV linac (LA-20–40) of the YerPhI LTF which is under construction will supply up to 1 mA average current beams for the following types of…”
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Experimental investigation of photon multiplicity and radiation cooling for 150 GeV electrons/positrons traversing diamond and Si crystals by Kirsebom, K., Medenwaldt, R., Mikkelsen, U., Møller, S.P., Paludan, K., Uggerhøj, E., Worm, T., Elsener, K., Ballestrero, S., Sona, P., Romano, J., Connell, S.H., Sellschop, J.P.F., Avakian, R.O., Avetisian, A.E., Taroian, S.P.

“…Detailed experimental investigations of photon multiplicities for 150 GeV electrons/positrons traversing thin diamond and Si crystals have been performed…”
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Conversion of the linear polarization of gamma quanta beams into circular with the help of lasers and single crystals by Avakian, R.O., Darbinian, S.M., Ispirian, K.A., Ispirian, M.K.

“…The energy dependence of the quarter wavelength plate thickness of laser “light targets“ and single crystals when the gamma beam with energy greater than 100…”
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