Volume reflection and volume refraction of relativistic particles in a uniformly bent crystal
نویسندگان
چکیده
منابع مشابه
A Possibility of Volume Refraction of Negative Relativistic Particles in Bent Crystals
The volume coherent deflection of high-energy positive and negative particles in uniformly bent crystals is studied. The general analysis of potential scattering shows that the standard screening potential for a large class of collisions can cause the volume refraction for negative particles (antiprotons, electrons) instead of the volume reflection for positive particles (proton, positrons). PA...
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Influence of volume capture on a process of volume reflection of ultrarelativistic particles moving in bent single crystals was considered analytically. Relations describing various distributions of particles involving in the process, the probability of volume capture and behavior of channeling and dechanneling fractions of a beam were obtained. Results of study will be useful at creation of mu...
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It is shown that multiple volume reflections from different planes of one bent crystal becomes possible when particles move at a small angle with respect to a crystal axis. Such a Multiple Volume Reflection makes it possible to increase the particle deflection angle inside one crystal by more than four times and can be used to increase the efficiency of beam extraction and collimation at the LH...
متن کاملRadiation of Photons in Process of Charge Particle Volume Reflection in Bent Single Crystal
New type of radiation in crystals is predicted and investigated in computer simulation. It is shown that process of volume reflection of electrons and positrons in bent crystals is accomplished with high-power radiation of photons. Volume reflection radiation has intensity comparable with known channeling radiation, but it is less sensitive to entrance angle and sign of charge of a particle. Si...
متن کاملHigh-efficiency volume reflection of an ultrarelativistic proton beam with a bent silicon crystal.
The volume reflection phenomenon was detected while investigating 400 GeV proton interactions with bent silicon crystals in the external beam H8 of the CERN Super Proton Synchrotron. Such a process was observed for a wide interval of crystal orientations relative to the beam axis, and its efficiency exceeds 95%, thereby surpassing any previously observed value. These observations suggest new pe...
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ژورنال
عنوان ژورنال: JETP Letters
سال: 2008
ISSN: 0021-3640,1090-6487
DOI: 10.1134/s0021364008020057