Search

Your search keyword '"Boehm, F."' showing total 699 results
Start Over Author "Boehm, F."
699 results on '"Boehm, F."'

55. Buchbesprechungen

Author

Müller-Merbach, H., Retzko, H. G., Hemmer, H. R., Eichhorn, W., Brucker, P., Gallus, G., Todt, H., Schaltegger, P., Ohse, D., Schellhaas, H., and Boehm, F.

Published
1971
Full Text
View/download PDF

56. Buchbesprechungen

Author

Niedereichholz, J., Müller-Merbach, H., Boehm, F., Alhäuser, E. G., Winkler, G., Thurner, G., Schaltegger, P., Bühler, W., Petzold, H. J., Gallus, G., Wiezorke, B., Wiggert, H., and Altrogge, G.

Published
1973
Full Text
View/download PDF

58. Buchbesprechungen

Author

Gallus, G., Affeldt, D., Zimmermann, H. J., Hammann, P., Heiland, H. W., Todt, H., Schmidt, Wolfgang P., Müller-Merbach, H., Boehm, F., Schaltegger, P., Waschek, G., and Henn, R.

Published
1972
Full Text
View/download PDF

59. Buchbesprechungen

Author

Heuer, G., Schmidt, W. P., Soom, E., Zimmermann, H. J., Boehm, F., Geschka, H., Osswald, B., Hoffmann, H. -J., Kargl, H., Waschek, G., Oßwald, B., and Mertens, P.

Published
1973
Full Text
View/download PDF

66. Investigations of fast neutron production by 190 GeV/c muon interactions on graphite target

Author

Chazal, V., Boehm, F., Cook, B., Henrikson, H., Jonkmans, G., Paic, A., Mascarenhas, N., Vogel, P., and Vuilleumier, J.L.

Subjects
Physics::Instrumentation and Detectors, Nuclear Theory, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract

The production of fast neutrons (1 MeV - 1 GeV) in high energy muon-nucleus interactions is poorly understood, yet it is fundamental to the understanding of the background in many underground experiments. The aim of the present experiment (CERN NA55) was to measure spallation neutrons produced by 190 GeV/c muons scattering on carbon target. We have investigated the energy spectrum and angular distribution of spallation neutrons, and we report the result of our measurement of the neutron production differential cross section. The production of fast neutrons (1 MeV - 1 GeV) in high energy muon-nucleus interactions is poorly understood, yet it is fundamental to the understanding of the background in many underground experiments. The aim of the present experiment (CERN NA55) was to measure spallation neutrons produced by 190 GeV/c muons scattering on carbon, copper and lead targets. We have investigated the energy spectrum and angular distribution of spallation neutrons, and we report the result of our measurement of the neutron production differential cross section.

Published
2001

68. The Palo Verde neutrino oscillation experiment

Author

Boehm, F., Chen, M., Cook, B., Henrikson, H., Hertenberger, R., Lou, K., Mascarenhas, N., Novikov, V. M., Piepke, A., Petr Vogel, Yang, S., Hanson, J., Michael, D., Pittalwala, S., Wilferd, R., Young, S., Gratta, G., Miller, L., Wang, Y. F., Busenitz, J., and Vital, A.

Subjects
Detectors and Experimental Techniques
Published
1998

73. Economic Risk Factors for HIV Infection Among Women in Rural Haiti: Implications for HIV Prevention Policies and Programs in Resource-Poor Settings

Author

Fawzi, M.C. Smith, primary, Lambert, W., additional, Boehm, F., additional, Finkelstein, J.L., additional, Singler, J.M., additional, Léandre, F., additional, Nevil, P., additional, Bertrand, D., additional, Claude, M.S., additional, Bertrand, J., additional, Louissaint, M., additional, Jeannis, L., additional, Farmer, P.E., additional, Yang, A.T., additional, and Mukherjee, J.S., additional

Published
2010
Full Text
View/download PDF

74. Search for neutrinoless double-beta decay in 136-Xe with a time projection chamber

Author

Vuilleumier, J.-C., Busto, J., Farine, J., Jörgens, V., Mitchell, L. W., Treichel, M., Vuilleumier, J.-L., Wong, H. T., Boehm, F., Fisher, P., Henrikson, H. E., Imel, D. A., Iqbal, M. Z., O'Callaghan-Hay, B. M., Thomas, J., and Gabathuler, K.

Subjects
Caltech Library Services
Abstract

A xenon time projection chamber (TPC) with an active volume of 180 liters has been built to study neutrinoless double-beta decay in Xe-136. The experiment was performed in the Gotthard Underground Laboratory, with 5 atm of xenon enriched to 62.5% in Xe-136. The experimental details, background considerations, detector performance, and data analysis are discussed. From 6830 h of data, no evidence has been found for the 0nu 0+-->0+ transition. Half-life limits of T1/2(0nu) > 3.4(6.4) X 10^(23) yr in the mass mechanism mode, and T1/2(0nu) > 2.6(4.9) X 10^23 yr in the right-handed currents mode, at the 90(68)% C.L., were derived, corresponding to an upper limit on the Majorana neutrino mass parameter [m(nu)] of about 2.8 eV. Limits on two-neutrino double-beta decay of T1/2(2nu) /2 > 2. 1 X 10^(20) yr, and on neutrinoless double-beta decay with Majoron emission of T1/2(0nuchi) > 4.9 X 10^(21) yr, both at 90% C.L., were also derived. Accordingly, a limit on the effective Majoron-neutrino coupling parameter of [g(M)] < 2.4 X 10^(-4) was deduced.

Published
1993

75. Provenance of Proterozoic garnet-biotite gneiss recovered from Elan Bank, Kerguelen Plateau, southern Indian Ocean

Author

Nicolaysen, Kirsten, Bowring, Samuel, Frey, Frederic A, Weis, Dominique, Ingle, Stéphanie, Pringle, Malcolm M.S., Coffin, Millard, Antretter, Maria, Arndt, Nicholas, Barling, Jane, Boehm, F., Borre, Mai Kristine, Coxall, Helen H.K., Damasceno, Dimitri, Damuth, John J.E., Delius, Heike, Duncan, Robert R.A., Inokuchi, Hiroo, Keszthelyi, Laszlo, Mahoney, John, Moore, Casey C.L., Müller, Reidar, Neal, Clive C.R., Reusch, Douglas D.N., Saccocia, Peter P.J., Teagle, Damon A H, Wähnert, V., Wallace, Paul, Wise, Sherwood S.W., Zhao, XiXi, Nicolaysen, Kirsten, Bowring, Samuel, Frey, Frederic A, Weis, Dominique, Ingle, Stéphanie, Pringle, Malcolm M.S., Coffin, Millard, Antretter, Maria, Arndt, Nicholas, Barling, Jane, Boehm, F., Borre, Mai Kristine, Coxall, Helen H.K., Damasceno, Dimitri, Damuth, John J.E., Delius, Heike, Duncan, Robert R.A., Inokuchi, Hiroo, Keszthelyi, Laszlo, Mahoney, John, Moore, Casey C.L., Müller, Reidar, Neal, Clive C.R., Reusch, Douglas D.N., Saccocia, Peter P.J., Teagle, Damon A H, Wähnert, V., Wallace, Paul, Wise, Sherwood S.W., and Zhao, XiXi

Abstract

At Elan Bank of the Kerguelen Plateau in the southeast Indian Ocean, Leg 183 of the Ocean Drilling Program recovered clasts of garnet-biotite gneiss in a fluvial conglomerate intercalated with basalt flows. U-Pb and Pb-Pb dates of zircons and monazites in these clasts and an overlying sandstone range from 534 to 2547 Ma, which is much older than the surrounding Indian Ocean seafloor. These dates show that old continental crust resides in the shallow crust of the oceanic Kerguelen Plateau and that the breakup of Gondwana dispersed continental fragments into the nascent Indian Ocean lithosphere., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2001

76. Final report on the search for neutrinoless double-β decay of 76Ge from the Gotthard underground experiment

Author

Reusser, D., Treichel, M., Boehm, F., Fisher, P., Gabathuler, K., Henrikson, H. E., Jörgens, V., Mitchell, L. W., Nussbaum, C., and Vuilleumier, J.-L.

Subjects
Caltech Library Services
Abstract

We report here on the final results of a search for Ge-76 double-beta decay conducted in the Gotthard underground laboratory. The detector consists of an array of eight high-purity natural germanium crystals totaling 1095 cm^3 fiducial volume. The accumulated data set represents a sensitivity of 10.0 kg yr. No indication of neutrinoless double-beta decay was found. The measured half-life limits are T1/2(0+ --> 0+) > 6.0(3.3) x 10^(23) yr for the transition to the ground state and T1/2(0+ --> 2+) > 1.4(0.65) x 10^(23) yr for the transition to the first excited state at 68% (90%) C.L. From these results we derive an upper limit for the Majorana mass of the neutrino in the range of 1.8 to 6.7 eV depending on matrix-element calculations. The same results allow limits to be set for the right-handed-current parameters: < 3.6 x 10^(-6) and < 2.2 x 10^(-8).

Published
1992

77. Search for neutrino oscillations at the Palo Verde nuclear reactors

Author

Boehm, F., Busenitz, J., Cook, B., Gratta, G., Henrikson, H., Kornis, J., Lawrence, D., Lee, K. B., McKinny, K., Miller, L., Novikov, V., Piepke, A., Ritchie, B., Tracy, D., Vogel, P., Wang, Y.-F., Wolf, J., Boehm, F., Busenitz, J., Cook, B., Gratta, G., Henrikson, H., Kornis, J., Lawrence, D., Lee, K. B., McKinny, K., Miller, L., Novikov, V., Piepke, A., Ritchie, B., Tracy, D., Vogel, P., Wang, Y.-F., and Wolf, J.

Abstract

We report on the initial results from a measurement of the antineutrino flux and spectrum at a distance of about 800 m from the three reactors of the Pale Verde Nuclear Generating Station using a segmented gadolinium-loaded scintillation detector. We find that the antineutrino flux agrees with that predicted in the absence of oscillations excluding at 90% C.L. <(nu)over bar>(e)-<(nu)over bar>(x) oscillations with Delta m(2) > 1.12 x 10(-3) eV(2) for maximal mixing and sin(2)2 theta > 0.21 for large Delta m(2). Our results support the conclusion that the atmospheric neutrino oscillations observed by Super-Kamiokande do not involve nu(e).

Published
2000

78. Origin and evolution of a submarine large igneous province: The Kerguelen Plateau and Broken Ridge, southern Indian Ocean

Author

Frey, Frederic A, Nicolaysen, Kristen, Coffin, Millard, Wallace, Paul, Weis, Dominique, Damasceno, Dimitri, Zhao, XiXi, Wise, Sherwood S.W., Wähnert, V., Teagle, Damon A H, Saccocia, Peter P.J., Reusch, Douglas D.N., Pringle, Malcolm M.S., Neal, Clive C.R., Müller, Dietmar, Moore, Casey C.L., Mahoney, John, Keszthelyi, Laszlo, Inokuchi, Hiroo, Duncan, Robert R.A., Delius, Heike, Damuth, John J.E., Coxall, Helen H.K., Borre, Mai Kristine, Boehm, F., Barling, Jane, Arndt, Nicholas, Antretter, Maria, Frey, Frederic A, Nicolaysen, Kristen, Coffin, Millard, Wallace, Paul, Weis, Dominique, Damasceno, Dimitri, Zhao, XiXi, Wise, Sherwood S.W., Wähnert, V., Teagle, Damon A H, Saccocia, Peter P.J., Reusch, Douglas D.N., Pringle, Malcolm M.S., Neal, Clive C.R., Müller, Dietmar, Moore, Casey C.L., Mahoney, John, Keszthelyi, Laszlo, Inokuchi, Hiroo, Duncan, Robert R.A., Delius, Heike, Damuth, John J.E., Coxall, Helen H.K., Borre, Mai Kristine, Boehm, F., Barling, Jane, Arndt, Nicholas, and Antretter, Maria

Abstract

Oceanic plateaus form by mantle processes distinct from those forming oceanic crust at divergent plate boundaries. Eleven drillsites into igneous basement of Kerguelen Plateau and Broken Ridge, including seven from the recent Ocean Drilling Program Leg 183 (1998-99) and four from Legs 119 and 120 (1987-88), show that the dominant rocks are basalts with geochemical characteristics distinct from those of mid-ocean ridge basalts. Moreover, the physical characteristics of the lava flows and the presence of wood fragments, charcoal, pollen, spores and seeds in the shallow water sediments overlying the igneous basement show that the growth rate of the plateau was sufficient to form subaerial landmasses. Most of the southern Kerguelen Plateau formed at ~ 110 Ma, but the uppermost submarine lavas in the northern Kerguelen Plateau erupted during Cenozoic time. These results are consistent with derivation of the plateau by partial melting of the Kerguelen plume. Leg 183 provided two new major observations about the final growth stages of the Kerguelen Plateau. 1: At several locations, volcanism ended with explosive eruptions of volatilerich, felsic magmas; although the total volume of felsic volcanic rocks is poorly constrained, the explosive nature of the eruptions may have resulted in globally significant effects on climate and atmospheric chemistry during the late-stage, subaerial growth of the Kerguelen Plateau. 2: At one drillsite, clasts of garnet-biotite gneiss, a continental rock, occur in a fluvial conglomerate intercalated within basaltic flows. Previously, geochemical and geophysical evidence has been used to infer continental lithospheric components within this large igneous province. A continental geochemical signature in an oceanic setting may represent deeply recycled crust incorporated into the Kerguelen plume or continental fragments dispersed during initial formation of the Indian Ocean during breakup of Gondwana. The clasts of garnet-biotite gneiss are the, SCOPUS: re.j, info:eu-repo/semantics/published

Published
2000

79. New limit on neutrinoless double β decay in ^(136)Xe with a time projection chamber

Author

Wong, H. T., Boehm, F., Fisher, P., Gabathuler, K., Henrikson, H. E., Imel, D. A., Iqbal, M. Z., Jörgens, V., Mitchell, L. W., O'Callaghan-Hay, B. M., Thomas, J., Treichel, M., Vuilleumier, J.-C., and Vuilleumier, J.-L.

Abstract

A xenon time projection chamber with an active volume of 207 L has been built to study neutrinoless double β decay in ^(136)Xe. Data were taken in the Gotthard Underground Laboratory, with 5 atm of xenon enriched to 62.5% in ^(136)Xe. From 3380 h of data, no evidence has been found for the 0ν 0^(+)→0^(+) transition. Half-life limits of T_(1/2)^(0ν)>2.5(4.9)×10^(23) yr in the mass-mechanism mode and T_(1/2)^(0ν)>1.7(3.2)×10^(23) yr in the right-handed-current mode, at the 90(68)% C.L., were derived. An upper limit for the Majorana neutrino mass parameter was deduced.

Published
1991

82. COMMENT ON "EVIDENCE FOR NEUTRINOLESS DOUBLE BETA DECAY"

Author

AALSETH, C. E., primary, AVIGNONE, F. T., additional, BARABASH, A., additional, BOEHM, F., additional, BRODZINSKI, R. L., additional, COLLAR, J. I., additional, DOE, P. J., additional, EJIRI, H., additional, ELLIOTT, S. R., additional, FIORINI, E., additional, GAITSKELL, R. J, additional, GRATTA, G., additional, HAZAMA, R., additional, KAZKAZ, K., additional, KING, G. S., additional, KOUZES, R. T., additional, MILEY, H. S., additional, MOE, M. K., additional, MORALES, A., additional, MORALES, J., additional, PIEPKE, A., additional, ROBERTSON, R. G. H., additional, TORNOW, W., additional, VOGEL, P., additional, WARNER, R. A., additional, and WILKERSON, J. F., additional

Published
2002
Full Text
View/download PDF

84. Final results from the Palo Verde neutrino oscillation experiment

Author

Boehm, F., primary, Busenitz, J., additional, Cook, B., additional, Gratta, G., additional, Henrikson, H., additional, Kornis, J., additional, Lawrence, D., additional, Lee, K. B., additional, McKinny, K., additional, Miller, L., additional, Novikov, V., additional, Piepke, A., additional, Ritchie, B., additional, Tracy, D., additional, Vogel, P., additional, Wang, Y-F., additional, and Wolf, J., additional

Published
2001
Full Text
View/download PDF

85. Neutron production by cosmic-ray muons at shallow depth

Author

Boehm, F., primary, Busenitz, J., additional, Cook, B., additional, Gratta, G., additional, Henrikson, H., additional, Kornis, J., additional, Lawrence, D., additional, Lee, K. B., additional, McKinny, K., additional, Miller, L., additional, Novikov, V., additional, Piepke, A., additional, Ritchie, B., additional, Tracy, D., additional, Vogel, P., additional, Wang, Y-F., additional, and Wolf, J., additional

Published
2000
Full Text
View/download PDF

86. Results from the Palo Verde neutrino oscillation experiment

Author

Boehm, F., primary, Busenitz, J., additional, Cook, B., additional, Gratta, G., additional, Henrikson, H., additional, Kornis, J., additional, Lawrence, D., additional, Lee, K. B., additional, McKinny, K., additional, Miller, L., additional, Novikov, V., additional, Piepke, A., additional, Ritchie, B., additional, Tracy, D., additional, Vogel, P., additional, Wang, Y-F., additional, and Wolf, J., additional

Published
2000
Full Text
View/download PDF

87. Search for Neutrino Oscillations at the Palo Verde Nuclear Reactors

Author

Boehm, F., primary, Busenitz, J., additional, Cook, B., additional, Gratta, G., additional, Henrikson, H., additional, Kornis, J., additional, Lawrence, D., additional, Lee, K. B., additional, McKinny, K., additional, Miller, L., additional, Novikov, V., additional, Piepke, A., additional, Ritchie, B., additional, Tracy, D., additional, Vogel, P., additional, Wang, Y-F., additional, and Wolf, J., additional

Published
2000
Full Text
View/download PDF

95. Search for ββ decay in 136Xe: new results from the Gotthard experiment

Author

Luescher, R., primary, Farine, J., additional, Boehm, F., additional, Busto, J., additional, Gabathuler, K., additional, Gervasio, G., additional, Henrikson, H.E., additional, Jörgens, V., additional, Lou, K., additional, Paić, A., additional, Schenker, D., additional, Tadsen, A., additional, Treichel, M., additional, Vuilleumier, J.-L., additional, Vuilleumier, J.-M., additional, and Wong, H., additional

Published
1998
Full Text
View/download PDF

96. The Palo Verde neutrino oscillation experiment

Author

Boehm, F., primary, Busenitz, J., additional, Cook, B., additional, Gratta, G., additional, Hanson, J., additional, Henrikson, H., additional, Kornis, J., additional, Lawrence, D., additional, Lou, K., additional, Mascarenhas, N., additional, Michael, D., additional, Miller, L., additional, Novikov, V.M., additional, Piepke, A., additional, Pittalwala, S., additional, Ritchie, B., additional, Tracy, D., additional, Vital, A., additional, Vogel, P., additional, Wang, Y.-F., additional, Wilferd, R., additional, Yang, S., additional, and Young, S., additional

Published
1998
Full Text
View/download PDF

97. The Palo Verde reactor neutrino experiment A test for long baseline neutrino oscillations

Author

Boehm, F., primary, Hanson, J., additional, Henrikson, H., additional, Michael, D., additional, Novikov, V.M., additional, Piepke, A., additional, Vogel, P., additional, Yang, S., additional, Gratta, G., additional, Miller, L., additional, Tracy, D., additional, Wang, Y.F., additional, Busenitz, J., additional, Cornis, J., additional, Vital, A., additional, Wolf, J., additional, Dugger, M., additional, Lawrence, D., additional, Ritchie, B., additional, Pittalwala, S., additional, Wilferd, R., additional, and Young, S., additional

Published
1998
Full Text
View/download PDF

99. Search for neutrinoless double-βdecay inXe136with a time projection chamber

Author

Vuilleumier, J. -C., primary, Busto, J., additional, Farine, J., additional, Jörgens, V., additional, Mitchell, L. W., additional, Treichel, M., additional, Vuilleumier, J. -L., additional, Wong, H. T., additional, Boehm, F., additional, Fisher, P., additional, Henrikson, H. E., additional, Imel, D. A., additional, Iqbal, M. Z., additional, O'Callaghan-Hay, B. M., additional, Thomas, J., additional, and Gabathuler, K., additional

Published
1993
Full Text
View/download PDF

100. New limits on double beta decay of 136Xe

Author

Vuilleumier, J.-L., primary, Boehm, F., additional, Busto, J., additional, Gabathuler, K., additional, Henrikson, H., additional, Imel, D., additional, Jörgens, V.J., additional, Mitchell, L.V., additional, Treichel, M., additional, Vuilleumier, J.-C., additional, and Wong, H., additional

Published
1993
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results