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Title: Observation of Quasichanneling Oscillations

Abstract

We report on the first experimental observations of quasichanneling oscillations, recently seen in simulations and described theoretically. Although above-barrier particles penetrating a single crystal are generally seen as behaving almost as in an amorphous substance, distinct oscillation peaks nevertheless appear for particles in that category. The quasichanneling oscillations were observed at SLAC National Accelerator Laboratory by aiming 20.35 GeV positrons and electrons at a thin silicon crystal bent to a radius of R = 0.15 m, exploiting the quasimosaic effect. For electrons, two relatively faint quasichanneling peaks were observed, while for positrons, seven quasichanneling peaks were clearly identified.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Danish Council for Independent Research; Instituto Nazionale di Fisica Nucleare (INFN); National Science Foundation (NSF); USDOE Office of Science - Office of High Energy Physics
Contributing Org.:
SLAC E-212 Collaboration
OSTI Identifier:
1466332
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 119; Journal Issue: 2; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English

Citation Formats

Wistisen, T. N., Mikkelsen, R. E., Uggerhøj, U. I., Wienands, U., Markiewicz, T. W., Gessner, S., Hogan, M. J., Noble, R. J., Holtzapple, R., Tucker, S., Guidi, V., Mazzolari, A., Bagli, E., Bandiera, L., and Sytov, A. Observation of Quasichanneling Oscillations. United States: N. p., 2017. Web. doi:10.1103/PhysRevLett.119.024801.
Wistisen, T. N., Mikkelsen, R. E., Uggerhøj, U. I., Wienands, U., Markiewicz, T. W., Gessner, S., Hogan, M. J., Noble, R. J., Holtzapple, R., Tucker, S., Guidi, V., Mazzolari, A., Bagli, E., Bandiera, L., & Sytov, A. Observation of Quasichanneling Oscillations. United States. doi:10.1103/PhysRevLett.119.024801.
Wistisen, T. N., Mikkelsen, R. E., Uggerhøj, U. I., Wienands, U., Markiewicz, T. W., Gessner, S., Hogan, M. J., Noble, R. J., Holtzapple, R., Tucker, S., Guidi, V., Mazzolari, A., Bagli, E., Bandiera, L., and Sytov, A. Sat . "Observation of Quasichanneling Oscillations". United States. doi:10.1103/PhysRevLett.119.024801.
@article{osti_1466332,
title = {Observation of Quasichanneling Oscillations},
author = {Wistisen, T. N. and Mikkelsen, R. E. and Uggerhøj, U. I. and Wienands, U. and Markiewicz, T. W. and Gessner, S. and Hogan, M. J. and Noble, R. J. and Holtzapple, R. and Tucker, S. and Guidi, V. and Mazzolari, A. and Bagli, E. and Bandiera, L. and Sytov, A.},
abstractNote = {We report on the first experimental observations of quasichanneling oscillations, recently seen in simulations and described theoretically. Although above-barrier particles penetrating a single crystal are generally seen as behaving almost as in an amorphous substance, distinct oscillation peaks nevertheless appear for particles in that category. The quasichanneling oscillations were observed at SLAC National Accelerator Laboratory by aiming 20.35 GeV positrons and electrons at a thin silicon crystal bent to a radius of R = 0.15 m, exploiting the quasimosaic effect. For electrons, two relatively faint quasichanneling peaks were observed, while for positrons, seven quasichanneling peaks were clearly identified.},
doi = {10.1103/PhysRevLett.119.024801},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 2,
volume = 119,
place = {United States},
year = {2017},
month = {7}
}

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