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Title: Observation of Quasichanneling Oscillations

Abstract

Here, 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:
 [1];  [1];  [1];  [2];  [2];  [2];  [2];  [2];  [3];  [4];  [4];  [4];  [4];  [4];  [4]
  1. Aarhus Univ., Aarhus (Denmark)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. California Polytechnic State Univ., San Luis Obispo, CA (United States)
  4. Univ. of Ferrara, Ferrara (Italy)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
SLAC E-212 Collaboration
OSTI Identifier:
1374385
Alternate Identifier(s):
OSTI ID: 1369588
Grant/Contract Number:  
PHYS-1535696; PHY-1068662; AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
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
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Wistisen, T. N., Mikkelsen, R. E., Uggerhoj, 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., Uggerhoj, 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., Uggerhoj, 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.. Thu . "Observation of Quasichanneling Oscillations". United States. doi:10.1103/PhysRevLett.119.024801. https://www.osti.gov/servlets/purl/1374385.
@article{osti_1374385,
title = {Observation of Quasichanneling Oscillations},
author = {Wistisen, T. N. and Mikkelsen, R. E. and Uggerhoj, 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 = {Here, 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},
number = 2,
volume = 119,
place = {United States},
year = {Thu Jul 13 00:00:00 EDT 2017},
month = {Thu Jul 13 00:00:00 EDT 2017}
}

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