Search Results - "Semkow, TM"

Radioactivity in Trinitite six decades later by Parekh, Pravin P., Semkow, Thomas M., Torres, Miguel A., Haines, Douglas K., Cooper, Joseph M., Rosenberg, Peter M., Kitto, Michael E.

“…The first nuclear explosion test, named the Trinity test, was conducted on July 16, 1945 near Alamogordo, New Mexico. In the tremendous heat of the explosion,…”
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Comment on “Algebraic approach to the radioactive decay equations,” by L. Moral and A. F. Pacheco [Am. J. Phys. 71 (7), 684–686 (2003)] by Semkow, T. M.

“…The purposes of this comment are to outline the matrix solution with branching, to give physical applications of the solution, and to give new insight when all…”
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Low-background gamma spectrometry for environmental radioactivity by Semkow, T.M., Parekh, P.P., Schwenker, C.D., Khan, A.J., Bari, A., Colaresi, J.F., Tench, O.K., David, G., Guryn, W.

“…Development and performance of a low-background γ-ray spectrometer are described. The spectrometer consists of a 131% efficient Ge detector in U-type…”
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Modeling of alpha mass-efficiency curve by Semkow, T.M., Jeter, H.W., Parsa, B., Parekh, P.P., Haines, D.K., Bari, A.

“…We present a model for efficiency of a detector counting gross α radioactivity from both thin and thick samples, corresponding to low and high sample masses in…”
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EXPERIMENTAL VERIFICATION OF OVERDISPERSION IN RADIOASSAY DATA by Semkow, Thomas M

“…ABSTRACT—New evidence is provided suggesting that radioassay data are frequently overdispersed with respect to the Poisson distribution. Twelve cases of…”
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Theory of overdispersion in counting statistics caused by fluctuating probabilities by Semkow, Thomas M.

“…It is shown that the random Lexis fluctuations of probabilities such as probability of decay or detection cause the counting statistics to be overdispersed…”
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Overdispersion in nuclear statistics by Semkow, Thomas M.

“…The modern statistical distribution theory is applied to the development of the overdispersion theory in ionizing-radiation statistics for the first time. The…”
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Mobilization of thorium, radium and radon radionuclides in ground water by successive alpha-recoils by Sun, Hongbing, Semkow, Thomas M.

“…Alpha-recoil is an important way for the mobilization of α-decay daughters in ground water. The processes of decay and recoil from 238U to 222Rn and from 232Th…”
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LONG-TERM MONITORING OF RADIOACTIVITY IN SURFACE AIR AND DEPOSITION IN NEW YORK STATE by Kitto, Michael E, Fielman, Eileen M, Hartt, Greg M, Gillen, Elizabeth A, Semkow, Thomas M, Parekh, Pravin P, Bari, Abdul

“…Gross-beta activities have been determined weekly for 22 y from filtered atmospheric aerosols at seven sites in New York State. The activities, ranging from…”
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Experimental investigation of mass efficiency curve for alpha radioactivity counting using a gas-proportional detector by Semkow, T.M., Bari, A., Parekh, P.P., Haines, D.K., Gao, H., Bolden, A.N., Dahms, K.S., Scarpitta, S.C., Thern, R.E., Velazquez, S.

“…Gross α counting of evaporated water residues offers a simple method for screening α radioactivity in water for both public health and emergency purposes. The…”
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PRINCIPLES OF GROSS ALPHA AND BETA RADIOACTIVITY DETECTION IN WATER by Semkow, Thomas M, Parekh, Pravin P

“…ABSTRACT—A simultaneous detection of gross alpha and beta radioactivity was studied using gas proportional counting. This measurement is a part of a method…”
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Fractal model of radon emanation from solids by SEMKOW, T. M

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Fractal approach to the solid-particle environmental radioactivity by Semkow, Thomas M.

“…A model of solid particle, based on fractal geometry of surfaces, was developed to describe the distribution of radioactivity in the natural environment…”
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Multifarious application of well-type germanium detector by Parekh, P. P., Semkow, T. M., Bari, A., Torre, M. A., Haines, D. K., Harris, P. R., Fielman, E. M., Kitto, M. E.

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Statistical deconvolution of beta spectra: Implications for neutrino mass detection by Semkow, Thomas M.

“…We performed a Monte-Carlo simulation study of β − spectrum of 35S. A statistical deconvolution of the spectrum was then developed to address a priori…”
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In defense of Marie Curie by Semkow, T. M., Semkow, K. W.

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Local area networks in radioactivity measurements by SEMKOW, T. M, SCHWENKER, C. D, KITTO, M. E, DALY, J. C

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Quantitation of asbestos in synthetic mixtures using instrumental neutron activation analysis by Parekh, Pravin P, Janulis, Richard J, Webber, James S, Semkow, Thomas M

“…A method that has been developed for the quantitative determination of asbestos and other major components in bulk samples is presented. It uses concentrations…”
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Nuclear-structure effects in proton evaporation spectra by Sarantites, DG, Baktash, C, Nicolis, NG, Garcia-Bermudez, G, Abenante, V, V, Beene, JR, Johnson, NR, Halbert, ML, Hensley, DC, McGowan, FK, Griffin, HC, Lee, IY, Majka, Z, Riley, MA, Semkow, TM, Stracener, DW, Virtanen, A

“…Energy spectra and angular distributions of evaporated protons from the reaction {sup 52}Cr({sup 34}S, 2{ital p}2{ital n}){sup 82}Sr at 130 MeV were measured…”
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Nuclear-charge distribution for A=121 from thermal-neutron-induced fission of 235U by Robinson, L, Wahl, AC, Semkow, TM, Norris, AE

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