Ralph G. DeVoe

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Classical collisions with an ideal gas generate non-Maxwellian distribution functions for a single ion in a radio frequency ion trap. The distributions have power-law tails whose exponent depends on the ratio of buffer gas to ion mass. This provides a statistical explanation for the previously observed transition from cooling to heating. Monte Carlo results(More)
Many extensions of the standard model of particle physics suggest that neutrinos should be Majorana-type fermions-that is, that neutrinos are their own anti-particles-but this assumption is difficult to confirm. Observation of neutrinoless double-β decay (0νββ), a spontaneous transition that may occur in several candidate nuclei, would verify the Majorana(More)
J. B. Albert,1 M. Auger,2 D. J. Auty,3 P. S. Barbeau,4 E. Beauchamp,5 D. Beck,6 V. Belov,7 C. Benitez-Medina,8 J. Bonatt,9,4 M. Breidenbach,10 T. Brunner,4 A. Burenkov,7 G. F. Cao,11 C. Chambers,8 J. Chaves,4 B. Cleveland,5,* S. Cook,8 A. Craycraft,8 T. Daniels,9 M. Danilov,7 S. J. Daugherty,1 C. G. Davis,12 J. Davis,4 R. DeVoe,4 S. Delaquis,2 A. Dobi,12 A.(More)
N. Ackerman,* B. Aharmim, M. Auger, D. J. Auty, P. S. Barbeau, K. Barry, L. Bartoszek, E. Beauchamp, V. Belov, C. Benitez-Medina, M. Breidenbach, A. Burenkov, B. Cleveland, R. Conley, E. Conti, J. Cook, S. Cook, A. Coppens, I. Counts, W. Craddock, T. Daniels, M.V. Danilov, C. G. Davis, J. Davis, R. deVoe, Z. Djurcic, A. Dobi, A.G. Dolgolenko, M. J.(More)
We report high-contrast storage of 64-kbit digital data pages in a photorefractive polymer material. Singlepage writing, reading, and erasing operations were demonstrated with a dual-function-dopant polymeric material having a dark lifetime of several days. Data were reconstructed without error by use of several simple readout algorithms.
J.B. Albert, M. Auger, D.J. Auty, P.S. Barbeau, E. Beauchamp, D. Beck, V. Belov, C. Benitez-Medina, J. Bonatt, 4 M. Breidenbach, T. Brunner, A. Burenkov, G.F. Cao, C. Chambers, J. Chaves, B. Cleveland, a S. Cook, A. Craycraft, T. Daniels, M. Danilov, S.J. Daugherty, C.G. Davis, J. Davis, R. DeVoe, S. Delaquis, A. Dobi, A. Dolgolenko, M.J. Dolinski, M.(More)
We present evidence,from a study of multihadronic'final states produced in e+eannihilation at center-of-mass energies between 3.90 GeV and 4.60 GeV,for the production of a new neutral state with mass 1865 + 15 MeV/c: an$ -2 T decay width less than 40 MeV/c2 that decays to K v -T-r and K r 71 r . The recoil mass spectrum for this state suggests that it is(More)
We describe an approach to the study of neutrino masses that combines quantum optics techniques with radiation detectors to obtain unprecedented sensitivity. With it the search for Majorana neutrino masses down to ;10 meV will become accessible. The experimental technique uses the possibility of individually detecting Ba-ions in the final state of 136 Xe(More)
E. Conti1,2†, R. DeVoe, G. Gratta, T. Koffas, S. Waldman, J. Wodin, D. Akimov, G. Bower, M. Breidenbach, R. Conley, M. Danilov, Z. Djurcic, A. Dolgolenko, C. Hall, A. Odian, A. Piepke, C.Y. Prescott, P.C. Rowson, K. Skarpaas, J-L. Vuilleumier, K. Wamba, O. Zeldovich 1 Physics Department, Stanford University, Stanford CA, USA 2 Stanford Linear Accelerator(More)