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Title: Neutron lifetime experiment based on an accordion-like UCN storage volume coated with 'Low Temperature Fomblin'

Abstract

A new type of per-fluorinated polymer, “Low Temperature Fomblin,” has been tested as a wall coating in an ultracold neutron (UCN) storage experiment using a gravitational storage system. The data show a UCN reflection loss coefficient η as low as ≈ 5 × 10-6 in the temperature range 105 K to 150 K. We plan to use this oil in a new type of neutron lifetime measurement, where a bellows system (“accordion”) enables to vary the trap size in a wide range while the total surface area and distribution of surface area over height remain constant. These unique characteristics, in combination with application of the scaling technique developed by W. Mampe et al. in 1989, ensure exact linearity for the extrapolation from inverse storage lifetimes to the inverse neutron lifetime. Linearity holds for any energy dependence of loss coefficient µ(E). Using the UCN source at the Institut Laue Langevin we expect to achieve a lifetime precision below ±1 s.

Authors:
 [1];  [2];  [2];  [3];  [4];  [5];  [6];  [7];  [7]
+ Show Author Affiliations
  1. Harvard Univ., Cambridge, MA (United States)
  2. Univ. of Rhode Island, Kingston, RI (United States)
  3. Joint Inst. for Nuclear Research, Dubna (Russian Federation)
  4. Joint Inst. for Nuclear Research, Dubna (Russian Federation)
  5. Inst. Laue-Langevin (ILL), Grenoble (France)
  6. Osaka City Univ. (Japan)
  7. Paul Scherrer Inst. (PSI), Villigen (Switzerland)
Publication Date:
Research Org.:
Univ. of Rhode Island, Kingston, RI (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1628760
Grant/Contract Number:  
FG02-02ER45970
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Research of the National Institute of Standards and Technology
Additional Journal Information:
Journal Volume: 110; Journal Issue: 4; Journal ID: ISSN 1044-677X
Publisher:
National Institute of Standards (NIST)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Instruments & Instrumentation; Physics; neutron lifetime; ultracold neutrons

Citation Formats

Yerozolimsky, B., Steyerl, A., Kwon, O., Luschikov, V., Strelkov, A., Geltenbort, P., Achiwa, N., Pichlmaier, A., and Fierlinger, P. Neutron lifetime experiment based on an accordion-like UCN storage volume coated with 'Low Temperature Fomblin'. United States: N. p., 2005. Web. doi:10.6028/jres.110.052.
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Yerozolimsky, B., Steyerl, A., Kwon, O., Luschikov, V., Strelkov, A., Geltenbort, P., Achiwa, N., Pichlmaier, A., & Fierlinger, P. Neutron lifetime experiment based on an accordion-like UCN storage volume coated with 'Low Temperature Fomblin'. United States. https://doi.org/10.6028/jres.110.052
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Yerozolimsky, B., Steyerl, A., Kwon, O., Luschikov, V., Strelkov, A., Geltenbort, P., Achiwa, N., Pichlmaier, A., and Fierlinger, P. Fri . "Neutron lifetime experiment based on an accordion-like UCN storage volume coated with 'Low Temperature Fomblin'". United States. https://doi.org/10.6028/jres.110.052. https://www.osti.gov/servlets/purl/1628760.
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@article{osti_1628760,
title = {Neutron lifetime experiment based on an accordion-like UCN storage volume coated with 'Low Temperature Fomblin'},
author = {Yerozolimsky, B. and Steyerl, A. and Kwon, O. and Luschikov, V. and Strelkov, A. and Geltenbort, P. and Achiwa, N. and Pichlmaier, A. and Fierlinger, P.},
abstractNote = {A new type of per-fluorinated polymer, “Low Temperature Fomblin,” has been tested as a wall coating in an ultracold neutron (UCN) storage experiment using a gravitational storage system. The data show a UCN reflection loss coefficient η as low as ≈ 5 × 10-6 in the temperature range 105 K to 150 K. We plan to use this oil in a new type of neutron lifetime measurement, where a bellows system (“accordion”) enables to vary the trap size in a wide range while the total surface area and distribution of surface area over height remain constant. These unique characteristics, in combination with application of the scaling technique developed by W. Mampe et al. in 1989, ensure exact linearity for the extrapolation from inverse storage lifetimes to the inverse neutron lifetime. Linearity holds for any energy dependence of loss coefficient µ(E). Using the UCN source at the Institut Laue Langevin we expect to achieve a lifetime precision below ±1 s.},
doi = {10.6028/jres.110.052},
journal = {Journal of Research of the National Institute of Standards and Technology},
number = 4,
volume = 110,
place = {United States},
year = {Fri Jul 01 00:00:00 EDT 2005},
month = {Fri Jul 01 00:00:00 EDT 2005}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.6028/jres.110.052
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Works referenced in this record:

Neutron lifetime measured with stored ultracold neutrons
journal, August 1989

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    Works referencing / citing this record:

    Tests of the standard electroweak model in nuclear beta decay
    journal, September 2006

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