Zobrazeno 1 - 10
of 26
pro vyhledávání: '"C J Umbarger"'
Autor:
M.A. Wolf, C. J. Umbarger
Publikováno v:
Nuclear Instruments and Methods. 155:453-457
A fully portable, phoswich-detector-based, radiation survey instrument has been developed. The design takes advantage of the low photon background characteristics of a phoswich scintillator system to detect small amounts of low energy photon emitters
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aaf17092e008b8e2c1f45c66563f590d
https://doi.org/10.1016/0029-554x(78)90529-3
https://doi.org/10.1016/0029-554x(78)90529-3
Publikováno v:
IEEE Transactions on Nuclear Science. 31:655-658
A number of new, ultra-low-powered radiation instruments have recently been developed at Los Alamos. Among these are two instruments which use a novel power source to eliminate costly batteries. The newly developed gamma detecting radiac, nicknamed t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e28b312eab3458ffc6969cc77d4f56a7
https://doi.org/10.1109/tns.1984.4333338
https://doi.org/10.1109/tns.1984.4333338
Autor:
L.R. Cowder, C. J. Umbarger
Publikováno v:
Nuclear Instruments and Methods. 121:491-498
A versatile monitoring system is described which allows the nondestructive analysis of batch liquid samples, surface contaminations, and bulk waste packages for radioactive materials. The system uses the simplicity and extremely high sensitivity of N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f08f0381ec4f5190fdaf6b0e7f8d1ac6
https://doi.org/10.1016/0029-554x(74)90203-1
https://doi.org/10.1016/0029-554x(74)90203-1
Autor:
C. J. Umbarger, M. A. Wolf, Chris Moyer, J. M. Crowell, Gary M. Worth, A. D. Meddles, J. D. Jarrett
Publikováno v:
IEEE Transactions on Nuclear Science. 32:957-960
The adaptation of a commercial ranging and tracking system interfaced to these instruments and to an advanced computer graphics system promises another major improvement to the automation of data collection. Contour maps with radiation isopleths and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c295f6bf7eee794fca6bc43f0082ce70
https://doi.org/10.1109/tns.1985.4336974
https://doi.org/10.1109/tns.1985.4336974
Publikováno v:
IEEE Transactions on Nuclear Science. 21:731-734
The proton radiative capture reactions, 12C(p, y)13N and 13C(p, y)14N, have been studied to determine their applicability for assaying materials for their 13C enrichment. This technique for determining carbon isotopic ratios compares favorably with t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a9ef89d311f0c52c5c0291d17b790d1
https://doi.org/10.1109/tns.1974.4327541
https://doi.org/10.1109/tns.1974.4327541
Publikováno v:
Nuclear Instruments and Methods. 113:561-571
An investigation of the /sup 12/C(p, gamma )/sup 13/N and /sup 13/C(p, gamma )/sup 1 4/N reactions has been made to determine their applicability for assaying materials for their /sup 13/C enrichment. The system was calibrated by measuring the ratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e75974f9a8bb359c924704520946102
https://doi.org/10.1016/0029-554x(73)90750-7
https://doi.org/10.1016/0029-554x(73)90750-7
Publikováno v:
Physical Review A. 7:1269-1272
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a03145f71e2a3ac5208962942abe8ba4
https://doi.org/10.1103/physreva.7.1269
https://doi.org/10.1103/physreva.7.1269
Publikováno v:
Physical Review C. 2:1378-1384
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b94f3093cad1ddfa1042ff2bc0c5609
https://doi.org/10.1103/physrevc.2.1378
https://doi.org/10.1103/physrevc.2.1378
Publikováno v:
Physical Review A. 8:1873-1879
$\frac{K\ensuremath{\alpha}}{K\ensuremath{\beta}}$ x-ray yield ratios have been determined for eleven elements, Ti, V, Fe, Ni, Cu, Ge, Rb, Zr, Ag, Sn, and Sb, when bombarded with protons of 1.00, 2.25, and 3.00 MeV. Excitation functions of $\frac{K\e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e77cf47e688b28ab8d38a8ace8468fc0
https://doi.org/10.1103/physreva.8.1873
https://doi.org/10.1103/physreva.8.1873
Publikováno v:
Advances in X-ray Analysis. 16:102-110
Protons from a 3 MV Van de Graaff have been used to produce characteristic x-rays from 21 elements spanning the periodic table. Absolute Kα and Lα x-ray production cross sections have been determined, allowing one to calculate sensitivities for any
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c6a2b3193ea553b1e4ba2d281b3bcef
https://doi.org/10.1154/s0376030800003943
https://doi.org/10.1154/s0376030800003943