Zobrazeno 1 - 10
of 18
pro vyhledávání: '"J. David Bowman"'
Autor:
J. David Bowman, Warigia M. Bowman
Publikováno v:
The Journal of Modern African Studies. 54:495-531
In 2013, the Kenyan government adopted a hybrid censorship strategy that relied on regulation, the presence of a strong security state, and the willingness of Kenyans to self-censor. The goal of this censorship strategy was to ensure a peaceful elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b551715e73bb3ab7e417768613e7aa67
https://doi.org/10.1017/s0022278x16000380
https://doi.org/10.1017/s0022278x16000380
Autor:
Vladimir Gudkov, J. David Bowman
Publikováno v:
Physical Review C. 90
Time reversal invariance violating (TRIV) effects in neutron transmission through a nuclear target are discussed. Here, we demonstrate the existence of a class of experiments that are free from false asymmetries. We discuss the enhancement of TRIV ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::040c7330a27a57b1eb83d54fa917e176
https://doi.org/10.1103/physrevc.90.065503
https://doi.org/10.1103/physrevc.90.065503
Autor:
Seppo Penttila, J. David Bowman
Publikováno v:
Next Generation Experiments to Measure the Neutron Lifetime.
Performance of a neutron trap for cleaning quasi-trapped neutrons depends on what fraction of the neutron orbits are chaotic. In this paper we argue that the Lyapunov characteristic exponent is a good measure the chaos because regular orbits have Lya
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6953f30d9cf9e8cf811f294aa5004fc5
https://doi.org/10.1142/9789814571678_0006
https://doi.org/10.1142/9789814571678_0006
Autor:
H. L. Stacy, J. David Bowman, J. P. Quintana, R. L. Rabie, David J. Funk, C. E. Ragan, George L. Morgan, V. Yuan
Publikováno v:
Physical review letters. 94(12)
We report a direct measurement of temperature in a shocked metal using Doppler broadening of neutron resonances. The 21.1-eV resonance in $^{182}\mathrm{W}$ was used to measure the temperature in molybdenum shocked to $\ensuremath{\sim}63\text{ }\tex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::baa26cc6cb405b569e246a1effa4b4c2
https://pubmed.ncbi.nlm.nih.gov/15903931
https://pubmed.ncbi.nlm.nih.gov/15903931
Autor:
Stanley W. Stephenson, E. I. Sharapov, P. P. J. Delheij, Bret E. Crawford, H. Postma, G. E. Mitchell, T. Haseyama, J. N. Knudson, S. I. Penttilä, Akira Masaike, N. R. Roberson, Yu. P. Popov, V. W. Yuan, Yuji Matsuda, Yi-Fen Yen, J. David Bowman, S. J. Seestrom, L. Y. Lowie
Publikováno v:
SPIE Proceedings.
I describe a new generation of experiments studying the weak interaction between nucleons. Measurements of the effect of this interaction are few in number and the significance of the observed effects are generally small. It is well known that the we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42e19147dabe119ac5ce30bbc03dc9b8
https://doi.org/10.1117/12.267939
https://doi.org/10.1117/12.267939
Publikováno v:
Physical Review Letters. 41:442-445
The different decay rates of ..mu.. ..-->.. e..gamma gamma.. for the most general local interaction are presented. It is shown that recently publishing data on ..mu.. ..-->.. e..gamma.. imply an upper limit on the branching ratio for ..mu.. ..-->.. e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4ef956123810ff17bea8977ce036c1c
https://doi.org/10.1103/physrevlett.41.442
https://doi.org/10.1103/physrevlett.41.442
Publikováno v:
Nuclear Instruments and Methods. 174:411-419
The design, fabrication techniques, and performance parameters are presented for a light pulser consisting of radioactive 207Bi embedded in capsulses of various types of plastic scintillator material. A typical resolution of 16% (fwhm) for the 0.974
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e71e54484cf24f66efc2bb4b2f2cb5bc
https://doi.org/10.1016/0029-554x(80)91091-5
https://doi.org/10.1016/0029-554x(80)91091-5
Autor:
J. David Bowman
Publikováno v:
Nuclear Physics A. 335:375-383
We report on the pion single charge exchange program at LAMPF. The LAMPF π° spectrometer is described and its successful performance in this first data run is discussed. Results on the excitation of the isobaric analog state (IAS) in pion single ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72484078008a356e73439fba03830031
https://doi.org/10.1016/0375-9474(80)90192-x
https://doi.org/10.1016/0375-9474(80)90192-x
Publikováno v:
Physical Review C. 25:941-951
Alpha particle energies were redetermined to an accuracy of 2 to 5 keV for a group of 40 neutron-deficient nulcides with atomic numbers ranging from 65 to 68. Improved half-life values were measured for 10 of these nuclides. Weightless samples contai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e72366bea6bcee445a9ae31499a18f6b
https://doi.org/10.1103/physrevc.25.941
https://doi.org/10.1103/physrevc.25.941
Autor:
J. David Bowman, R. H. Heffner
Publikováno v:
Nuclear Instruments and Methods. 148:503-509
The design, construction and test of a heavy ion time pick-off system are described. The detector presents a homogeneous foil of a few μg/cm 2 thickness to the beam. Secondary emission electrons are isochronously transported to a channel plate elect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abf392a64dea991cdc5c3301fb26cea2
https://doi.org/10.1016/0029-554x(78)91032-7
https://doi.org/10.1016/0029-554x(78)91032-7