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Dewey MS, Gilliam DM, Nico JS, et al. Measurement of the neutron lifetime using a proton trap. Phys Rev Lett. 2003;91(15):152302doi: 10.1103/PhysRevLett.91.152302.
Dewey, M. S., Gilliam, D. M., Nico, J. S., Wietfeldt, F. E., Fei, X., Snow, W. M., Greene, G. L., Pauwels, J., Eykens, R., Lamberty, A., & Van Gestel, J. (2003). Measurement of the neutron lifetime using a proton trap. Physical review letters, 91(15), 152302. https://doi.org/10.1103/PhysRevLett.91.152302
Dewey, M S, et al. "Measurement of the neutron lifetime using a proton trap." Physical review letters vol. 91,15 (2003): 152302. doi: https://doi.org/10.1103/PhysRevLett.91.152302
Dewey MS, Gilliam DM, Nico JS, Wietfeldt FE, Fei X, Snow WM, Greene GL, Pauwels J, Eykens R, Lamberty A, Van Gestel J. Measurement of the neutron lifetime using a proton trap. Phys Rev Lett. 2003 Oct 10;91(15):152302. doi: 10.1103/PhysRevLett.91.152302. Epub 2003 Oct 10. PMID: 14611461.
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Phys Rev Lett. 2003 Oct 10;91(15):152302. doi: 10.1103/PhysRevLett.91.152302. Epub 2003 Oct 10.

Measurement of the neutron lifetime using a proton trap.

Physical review letters

M S Dewey, D M Gilliam, J S Nico, F E Wietfeldt, X Fei, W M Snow, G L Greene, J Pauwels, R Eykens, A Lamberty, J Van Gestel

Affiliations

  1. National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.

PMID: 14611461 DOI: 10.1103/PhysRevLett.91.152302

Abstract

We report a new measurement of the neutron decay lifetime by the absolute counting of in-beam neutrons and their decay protons. Protons were confined in a quasi-Penning trap and counted with a silicon detector. The neutron beam fluence was measured by capture in a thin 6LiF foil detector with known absolute efficiency. The combination of these simultaneous measurements gives the neutron lifetime: tau(n)=(886.8+/-1.2[stat]+/-3.2[syst]) s. The systematic uncertainty is dominated by uncertainties in the mass of the 6LiF deposit and the 6Li(n,t) cross section. This is the most precise measurement of the neutron lifetime to date using an in-beam method.

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