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Author: jeffrey nico

Displaying records 11 to 20 of 62 records.
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11. An experiment for the precision measurement of the radiative decay mode of the neutron
Published: 10/5/2009
Authors: R Cooper, Christopher D. Bass, E Beise, H Breuer, J Byrne, T E. Chupp, Kevin J Coakley, Maynard S Dewey, B Fisher, Changbo Fu, Thomas R Gentile, M. McGonagle, Hans P Mumm, Jeffrey S Nico, Alan K Thompson, F E. Wietfeldt
Abstract: The neutron typically beta decays into a proton, electron, and antineutrino. In some decays, it can be accompanied by a high energy photon. We recently performed the rst observation of the radiative beta decay branch for the free neutron with phot ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842579

12. Prospects for a New Cold Neutron Beam Measurement of the Neutron Lifetime
Published: 10/5/2009
Authors: Maynard S Dewey, Kevin J Coakley, David McLarty Gilliam, G. Greene, A. Laptev, Jeffrey S Nico, W M. Snow, F. E Wiefeldt, A. Yue
Abstract: In the most accurate cold neutron beam determination of the neutron lifetime based on the absolute counting of decay protons, the largest uncertainty was attributed to the absolute determination of the capture flux of the cold neutron beam. Currentl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842578

13. Neutron Beta-Decay
Published: 9/16/2009
Author: Jeffrey S Nico
Abstract: Studies of low-energy processes, such as neutron beta-decay, contribute important information regarding die rent aspects of physics including nuclear and particle physics and cosmology. The information from these systems is often complementary to tha ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902353

14. Measuring 6LI(N,T) and 10B(N,A) Cross Sections Using the NIST Alpha-Gamma Device
Published: 4/15/2009
Authors: Maynard S Dewey, David McLarty Gilliam, Jeffrey S Nico, G.L. Green, A. Laptev, A. Yue
Abstract: The 6LI(N,T) and 10B(N,A) cross sections are important neutron cross section standards. Precise knowledge of these cross sections is essential because they are often used as reference standards for obtaining the neutron fluence in investigations of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=901148

15. Pulse Shape Discrimination for a Fast Neutron Detector
Published: 2/9/2009
Authors: Kevin J Coakley, Dominic F. (Dominic F.) Vecchia, Jeffrey S Nico, B Fisher
Abstract: We are developing a detector that uses liquid scintillator loaded with Li-6 for the efficient measurement of fast neutrons and their energy. Such a detector would have both scientific applications such as quantification of neutron energy spectra in u ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900208

16. Radiative Beta Decay of the Free Neutron
Published: 2/2/2009
Authors: R L Cooper, T E. Chupp, Maynard S Dewey, Thomas R Gentile, Hans P Mumm, Jeffrey S Nico, Alan K Thompson, B M Fisher, I Kremsky, F E. Wietfeldt, E J Beise, H Breuer, K G Kiriluk, J Bryne, Kevin J Coakley, Changbo Fu
Abstract: The theory of quantum electrodynamics predicts that the beta decay of the neutron into a proton, electron, and antineutrino is accompanied by a continuous spectrum of emitted photons described as inner bremsstrahlung. While this phenomenon has been ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903836

17. Particle and Photon Detection for a Neutron Radiative Decay Experiment
Published: 4/11/2007
Authors: Thomas R Gentile, Maynard S Dewey, Hans P Mumm, Jeffrey S Nico, Alan K Thompson, T E. Chupp, R Cooper, B M Fisher, I Kremsky, F E. Wietfeldt, K G Kiriluk, E Beise
Abstract: We present the particle and photon detection methods employed in a program to observe neutron radiative beta-decay. The experiment is located at the NG-6 beam line at the National Institute of Standards and Technology Center for Neutron Research. E ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841179

18. Observation of the Radiative Decay Mode of the Free Neutron
Published: 12/29/2006
Authors: Jeffrey S Nico, Maynard S Dewey, Thomas R Gentile, Hans P Mumm, Alan K Thompson, B Fisher, I Kremsky, Fred E. Wietfeldt, T E Chupp, R Cooper, E Beise, K G Kiriluk, J Byrne, Kevin J Coakley
Abstract: The theory of quantum electrodynamics predicts that beta decay of the neutron into a proton, electron, and antineutrino should be accompanied by a continuous spectrum of soft photons. While this inner bremsstrahlung branch has been previously measure ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841194

19. Measurement of the Response of a Ga Solar Neutrino Experiment to Ar-37 Source
Published: 1/1/2006
Authors: V N Gavrin, J N Abdurashitov, V I Barsanov, T J Bowles, B T Cleveland, S R Elliott, S V Girin, V V Gorbachev, P P Gurkina, W C Haxton, T V Ibragimova, A A Janelidze, A V Kalikhov, A I Karpenko, N G Khairnasov, Yu S Khomyakov, T V Knodel, A V Korenkova, N A Kotelnikov, K Lande, V V Maltsev, S Yu Markov, V A Matveev, I N Mirmov, O V Mishin, Jeffrey S Nico, N N Oshkanov, A Petrov, V M Poplavsky, V V Popov, V V Selin, Z N Shakirov, A A Shikhin, A Suzuki, W A Teasdale, A M Tuchkov, B A Vasiliev, E P Veretenkin, V M Vermul, S A Voronov, J F Wilkerson, V E Yants, A A Zamyatina, G T Zatsepin, S B Zlokazov
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103129

20. Measurement of the Response of a Ga Solar Neutrino Experiment to Neutrinos from an ^u37^Ar Source
Published: 1/1/2006
Authors: J N Abdurashitov, V N Gavrin, S V Girin, V V Gorbachev, P P Gurkina, T V Ibragimova, A V Kalikhov, N G Khairnasov, T V Knodel, V A Matveev, I N Mirmov, A A Shikhin, E P Veretenkin, V M Vermul, V E Yants, G T Zatsepin, T J Bowles, S R Elliott, W A Teasdale, B T Cleveland, W C Haxton, J F Wilkerson, Jeffrey S Nico, A Suzuki, K Lande, Yu S Khomyakov, V M Poplavsky, V V Popov, O V Mishin, A Petrov, B A Vasiliev, S A Voronov, A I Karpenko, V V Maltsev, N N Oshkanov, A M Tuchkov, V I Barsanov, A A Janelidze, A V Korenkova, N A Kotelnikov, S Yu Markov, V V Selin, Z N Shakirov, A A Zamyatina, S B Zlokazov
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101044



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