Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Maynard S. Dewey"'
Autor:
Gordon L. Jones, G. Darius, E. J. Stephenson, Maynard S. Dewey, M. P. Mendenhall, C. DeAngelis, Fred E. Wietfeldt, M. T. Hassan, B. Collett, G. Noid, Jeffrey S. Nico, Thomas R. Gentile, Fred B. Bateman, A. Komives, W. A. Byron
The aCORN experiment measures the neutron decay electron-antineutrino correlation ($a$-coefficient) using a novel method based on an asymmetry in proton time-of-flight for events where the beta electron and recoil proton are detected in delayed coinc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82ef05d4f5eba4e9bc6c281babb8368c
Autor:
G. L. Greene, Maynard S. Dewey, A. Yue, E. Anderson, David M. Gilliam, A. Laptev, W. M. Snow, Jeffrey S. Nico
Publikováno v:
Metrologia. 55:460-485
A technique for establishing the total neutron rate of a highly-collimated monochromatic cold neutron beam was demonstrated using a method of an alpha-gamma counter. The method involves only the counting of measured rates and is independent of neutro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f92f8c316f7890ab9fc47a04a2d3aed7
https://doi.org/10.1088/1681-7575/aac283
https://doi.org/10.1088/1681-7575/aac283
Publikováno v:
Developments in X-Ray Tomography XII.
The NBS-1 photo-neutron source is the primary standard for neutron calibrations in the United States of America. The source is constructed from 1 g of radium in a RaBr2 salt contained in a Pt-Ir capsule located in the geometric center of a 4 cm beryl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dc33a8e842cc1939a63cb031f8e7ef1
https://doi.org/10.1117/12.2529502
https://doi.org/10.1117/12.2529502
Autor:
B. Collett, A. Laptev, Gordon L. Jones, M. T. Hassan, Jeffrey S. Nico, G. Darius, Maynard S. Dewey, Fred B. Bateman, C. Trull, G. Noid, I. Stern, Fred E. Wietfeldt, A. Komives, E. J. Stephenson, M. P. Mendenhall, C. DeAngelis
Publikováno v:
Nuclear instrumentsmethods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment. 867
Backscatter of electrons from a beta spectrometer, with incomplete energy deposition, can lead to undesirable effects in many types of experiments. We present and discuss the design and operation of a backscatter-suppressed beta spectrometer that was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::137e1da1409a315cc0fa39b9cec1dd35
https://pubmed.ncbi.nlm.nih.gov/31092963
https://pubmed.ncbi.nlm.nih.gov/31092963
Autor:
Geoffrey Greene, Hans P. Mumm, Nadia Fomin, W. M. Snow, Evan R. Adamek, Jeffrey S. Nico, Shannon Fogwell Hoogerheide, David M. Gilliam, Maynard S. Dewey
Publikováno v:
EPJ Web of Conferences, Vol 219, p 10004 (2019)
The Alpha-Gamma device at the National Institute of Standards and Technology (NIST) utilizes neutron capture on a totally absorbing 10B deposit to measure the absolute neutron flux of a monochromatic cold neutron beam. Gammas produced by the boron ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ac15f697b6176d6d49258d8b722f0f1
https://www.epj-conferences.org/articles/epjconf/pdf/2019/24/epjconf-ppns2019_10004.pdf
https://www.epj-conferences.org/articles/epjconf/pdf/2019/24/epjconf-ppns2019_10004.pdf
Autor:
Maynard S. Dewey, W. A. Byron, A. Komives, Fred E. Wietfeldt, G. Darius, Gordon L. Jones, M. T. Hassan, M. P. Mendenhall, E. J. Stephenson, C. DeAngelis, Jeffrey S. Nico, B. Collett
Publikováno v:
EPJ Web of Conferences, Vol 219, p 04008 (2019)
The aCORN experiment uses a novel asymmetry method to measure the electron-antineutrino correlation (a-coefficient) in free neutron decay that does not require precision proton spectroscopy. aCORN completed two physics runs at the NIST Center for Neu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::85d5d5a9a0ea19244ae9e9d9b1177dfd
https://www.epj-conferences.org/articles/epjconf/pdf/2019/24/epjconf-ppns2019_04008.pdf
https://www.epj-conferences.org/articles/epjconf/pdf/2019/24/epjconf-ppns2019_04008.pdf
Autor:
A. Komives, B. Collett, Thomas R. Gentile, Fred E. Wietfeldt, B.C. Schafer, Wangchun Chen, M. T. Hassan, Gordon L. Jones, Maynard S. Dewey, W. A. Byron
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 988:164862
The neutron polarization of the NG-C beamline at the NIST Center for Neutron Research was measured as part of the aCORN neutron beta decay experiment. Neutron transmission through a polarized 3He spin filter cell was recorded while adiabatic fast pas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8300cba92bbd0d0abf3c9cc509e3b05
https://doi.org/10.1016/j.nima.2020.164862
https://doi.org/10.1016/j.nima.2020.164862
Survival analysis approach to account for non-exponential decay rate effects in lifetime experiments
Autor:
A. Yue, P. R. Huffman, D.E. Marley, Maynard S. Dewey, K.W. Schelhammer, Alan K. Thompson, Kevin J. Coakley, Hans P. Mumm, Michael G. Huber, C.R. Huffer, C. O׳Shaughnessy
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 813:84-95
In experiments that measure the lifetime of trapped particles, in addition to loss mechanisms with exponential survival probability functions, particles can be lost by mechanisms with non-exponential survival probability functions. Failure to account
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::507c5aaa9637393a40b5764437a9a8fb
https://doi.org/10.1016/j.nima.2015.12.064
https://doi.org/10.1016/j.nima.2015.12.064
Autor:
Wangchun Chen, K. J. S. Stockton, I. Stern, A. Laptev, Thomas R. Gentile, H. Park, Jeffrey S. Nico, E. J. Stephenson, Gordon L. Jones, C. DeAngelis, J. Byrne, M. P. Mendenhall, W. K. Bauder, G. Darius, B. Collett, Maynard S. Dewey, G. Noid, B. G. Yerozolimsky, A. Komives, Fred E. Wietfeldt, W. A. Byron, Fred B. Bateman, M. T. Hassan, C. Trull
Publikováno v:
The Review of scientific instruments. 88(8)
We describe an apparatus used to measure the electron-antineutrino angular correlation coefficient in free neutron decay. The apparatus employs a novel measurement technique in which the angular correlation is converted into a proton time-of-flight a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa84a86514ef5c4978f3f4f878313705
https://pubmed.ncbi.nlm.nih.gov/28863637
https://pubmed.ncbi.nlm.nih.gov/28863637