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Morris CL, Adamek ER, Broussard LJ, et al. A new method for measuring the neutron lifetime using an in situ neutron detector. Rev Sci Instrum. 2017;88(5):053508doi: 10.1063/1.4983578.
Morris, C. L., Adamek, E. R., Broussard, L. J., Callahan, N. B., Clayton, S. M., Cude-Woods, C., Currie, S. A., Ding, X., Fox, W., Hickerson, K. P., Hoffbauer, M. A., Holley, A. T., Komives, A., Liu, C. Y., Makela, M., Pattie, R. W., Ramsey, J., Salvat, D. J., Saunders, A., Seestrom, S. J., Sharapov, E. I., Sjue, S. K., Tang, Z., Vanderwerp, J., Vogelaar, B., Walstrom, P. L., Wang, Z., Wei, W., Wexler, J. W., Womack, T. L., Young, A. R., & Zeck, B. A. (2017). A new method for measuring the neutron lifetime using an in situ neutron detector. The Review of scientific instruments, 88(5), 053508. https://doi.org/10.1063/1.4983578
Morris, C L, et al. "A new method for measuring the neutron lifetime using an in situ neutron detector." The Review of scientific instruments vol. 88,5 (2017): 053508. doi: https://doi.org/10.1063/1.4983578
Morris CL, Adamek ER, Broussard LJ, Callahan NB, Clayton SM, Cude-Woods C, Currie SA, Ding X, Fox W, Hickerson KP, Hoffbauer MA, Holley AT, Komives A, Liu CY, Makela M, Pattie RW, Ramsey J, Salvat DJ, Saunders A, Seestrom SJ, Sharapov EI, Sjue SK, Tang Z, Vanderwerp J, Vogelaar B, Walstrom PL, Wang Z, Wei W, Wexler JW, Womack TL, Young AR, Zeck BA. A new method for measuring the neutron lifetime using an in situ neutron detector. Rev Sci Instrum. 2017 May;88(5):053508. doi: 10.1063/1.4983578. PMID: 28571423; PMCID: PMC5648580.
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Rev Sci Instrum. 2017 May;88(5):053508. doi: 10.1063/1.4983578.

A new method for measuring the neutron lifetime using an in situ neutron detector.

The Review of scientific instruments

C L Morris, E R Adamek, L J Broussard, N B Callahan, S M Clayton, C Cude-Woods, S A Currie, X Ding, W Fox, K P Hickerson, M A Hoffbauer, A T Holley, A Komives, C-Y Liu, M Makela, R W Pattie, J Ramsey, D J Salvat, A Saunders, S J Seestrom, E I Sharapov, S K Sjue, Z Tang, J Vanderwerp, B Vogelaar, P L Walstrom, Z Wang, Wanchun Wei, J W Wexler, T L Womack, A R Young, B A Zeck

Affiliations

  1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  2. Department of Physics, Indiana University, Bloomington, Indiana 47408, USA.
  3. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
  4. Triangle Universities Nuclear Laboratory, North Carolina State University, Raleigh, North Carolina 27695, USA.
  5. Department of Physics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA.
  6. California Institute of Technology, Pasadena, California 91125, USA.
  7. Department of Physics, Tennessee Tech University, Cookeville, Tennessee 38505, USA.
  8. Department of Physics, DePauw University, Greencastle Indiana 46135-0037, USA.
  9. Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA.
  10. Joint Institute for Nuclear Research, Dubna, Moscow Region 141980, Russia.

PMID: 28571423 PMCID: PMC5648580 DOI: 10.1063/1.4983578

Abstract

In this paper, we describe a new method for measuring surviving neutrons in neutron lifetime measurements using bottled ultracold neutrons (UCN), which provides better characterization of systematic uncertainties and enables higher precision than previous measurement techniques. An active detector that can be lowered into the trap has been used to measure the neutron distribution as a function of height and measure the influence of marginally trapped UCN on the neutron lifetime measurement. In addition, measurements have demonstrated phase-space evolution and its effect on the lifetime measurement.

References

  1. Nature. 2000 Jan 6;403(6765):62-4 - PubMed
  2. Phys Rev Lett. 2013 Apr 26;110(17):172502 - PubMed
  3. Phys Rev Lett. 2013 Nov 27;111(22):222501 - PubMed
  4. J Res Natl Inst Stand Technol. 2005 Aug 01;110(4):345-50 - PubMed

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