Eric B. Norman

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Observations of neutral-current nu interactions on deuterium in the Sudbury Neutrino Observatory are reported. Using the neutral current (NC), elastic scattering, and charged current reactions and assuming the standard 8B shape, the nu(e) component of the 8B solar flux is phis(e) = 1.76(+0.05)(-0.05)(stat)(+0.09)(-0.09)(syst) x 10(6) cm(-2) s(-1) for a(More)
B. Aharmim,5 S.N. Ahmed,11 A.E. Anthony,13 E.W. Beier,10 A. Bellerive,3 M. Bergevin,4 S.D. Biller,9 J. Boger,2, a M.G. Boulay,7 M.G. Bowler,9 T.V. Bullard,15 Y.D. Chan,6 M. Chen,11 X. Chen,6, b B.T. Cleveland,9 G.A. Cox,15 C.A. Currat,6 X. Dai,3, 9 F. Dalnoki-Veress,3 H. Deng,10 P.J. Doe,15 R.S. Dosanjh,3 G. Doucas,9 C.A. Duba,15 F.A. Duncan,11 M.(More)
The Sudbury Neutrino Observatory (SNO) has measured day and night solar neutrino energy spectra and rates. For charged current events, assuming an undistorted 8B spectrum, the night minus day rate is 14.0%+/-6.3%(+1.5%)(-1.4%) of the average rate. If the total flux of active neutrinos is additionally constrained to have no asymmetry, the nu(e) asymmetry is(More)
We have observed fallout from the recent Fukushima Dai-ichi reactor accident in samples of rainwater collected in the San Francisco Bay area. Gamma ray spectra measured from these samples show clear evidence of fission products--(131,132)I, (132)Te, and (134,137)Cs. The activity levels we have measured for these isotopes are very low and pose no health risk(More)
The excitation functions for proton and deuteron induced reactions on natural molybdenum for the production of ⁹⁹Mo were measured. The proton induced reaction was measured in the energy range of 11.3-49.6 MeV, and the deuteron induced reaction was measured in the energy range of 9.7-58.5 MeV. Both beams were generated by the 88" cyclotron located at(More)
Data from the Sudbury Neutrino Observatory have been used to constrain the lifetime for nucleon decay to "invisible" modes, such as n-->3nu. The analysis was based on a search for gamma rays from the deexcitation of the residual nucleus that would result from the disappearance of either a proton or neutron from 16O. A limit of tau(inv)>2 x 10(29) yr is(More)
The spectral and temporal dependence of b-delayed g rays in the range EX3:0 MeV from thermal–neutron-induced fission are shown to be characteristic signatures of U and Pu: For the interrogation of large sea-going cargo containers filled with hydrogenous materials, b-delayed g rays can offer an increase in sensitivity for the detection of these and other(More)
B. Aharmim, S. N. Ahmed, E.W. Beier, A. Bellerive, S. D. Biller, J. Boger, M. G. Boulay, T. J. Bowles, S. J. Brice, T.V. Bullard, Y. D. Chan, M. Chen, X. Chen, B.T. Cleveland, G. A. Cox, X. Dai, F. Dalnoki-Veress, P. J. Doe, R. S. Dosanjh, G. Doucas, M. R. Dragowsky, C. A. Duba, F. A. Duncan, M. Dunford, J. A. Dunmore, E. D. Earle, S. R. Elliott, H. C.(More)
This Letter details a measurement of the ionization yield (Q(y)) of 6.7 keV(40)Ar atoms stopping in a liquid argon detector. The Q(y) of 3.6-6.3 detected e(-)/keV, for applied electric fields in the range 240-2130 V/cm, is encouraging for the use of this detector medium to search for the signals from hypothetical dark matter particle interactions and from(More)
W. Bertozzi,1 J. A. Caggiano,2 W. K. Hensley,2 M. S. Johnson,3 S. E. Korbly,1 R. J. Ledoux,1 D. P. McNabb,3 E. B. Norman,3 W. H. Park,1 and G. A. Warren2 1Passport Systems Incorporated, Acton, Massachusetts 01720, USA 2Pacific Northwest National Laboratory, Richland, Washington 99352, USA 3Lawrence Livermore National Laboratory, Livermore, California 94550,(More)