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Your search keyword '"Dombsky, M."' showing total 14 results
Start Over Author "Dombsky, M." Journal physical review letters
14 results on '"Dombsky, M."'

1. Direct Mass Measurement of the Four-Neutron Halo NuclideHe8

Author

Ryjkov, V. L., primary, Brodeur, M., additional, Brunner, T., additional, Smith, M., additional, Ringle, R., additional, Lapierre, A., additional, Ames, F., additional, Bricault, P., additional, Dombsky, M., additional, Delheij, P., additional, Lunney, D., additional, Pearson, M. R., additional, and Dilling, J., additional

Published
2008
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2. Precision Branching Ratio Measurement for the Superallowedβ+EmitterGa62and Isospin-Symmetry-Breaking Corrections inA≥62Nuclei

Author

Hyland, B., primary, Svensson, C. E., additional, Ball, G. C., additional, Leslie, J. R., additional, Achtzehn, T., additional, Albers, D., additional, Andreoiu, C., additional, Bricault, P., additional, Churchman, R., additional, Cross, D., additional, Dombsky, M., additional, Finlay, P., additional, Garrett, P. E., additional, Geppert, C., additional, Grinyer, G. F., additional, Hackman, G., additional, Hanemaayer, V., additional, Lassen, J., additional, Lavoie, J. P., additional, Melconian, D., additional, Morton, A. C., additional, Pearson, C. J., additional, Pearson, M. R., additional, Phillips, A. A., additional, Schumaker, M. A., additional, Smith, M. B., additional, Towner, I. S., additional, Valiente-Dobón, J. J., additional, Wendt, K., additional, and Zganjar, E. F., additional

Published
2006
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3. Nuclear Charge Radii ofLi9,11: The Influence of Halo Neutrons

Author

Sánchez, R., primary, Nörtershäuser, W., additional, Ewald, G., additional, Albers, D., additional, Behr, J., additional, Bricault, P., additional, Bushaw, B. A., additional, Dax, A., additional, Dilling, J., additional, Dombsky, M., additional, Drake, G. W. F., additional, Götte, S., additional, Kirchner, R., additional, Kluge, H.-J., additional, Kühl, Th., additional, Lassen, J., additional, Levy, C. D. P., additional, Pearson, M. R., additional, Prime, E. J., additional, Ryjkov, V., additional, Wojtaszek, A., additional, Yan, Z.-C., additional, and Zimmermann, C., additional

Published
2006
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4. Scalar Interaction Limits from theβ−νCorrelation of Trapped Radioactive Atoms

Author

Gorelov, A., primary, Melconian, D., additional, Alford, W. P., additional, Ashery, D., additional, Ball, G., additional, Behr, J. A., additional, Bricault, P. G., additional, D’Auria, J. M., additional, Deutsch, J., additional, Dilling, J., additional, Dombsky, M., additional, Dubé, P., additional, Fingler, J., additional, Giesen, U., additional, Glück, F., additional, Gu, S., additional, Häusser, O., additional, Jackson, K. P., additional, Jennings, B. K., additional, Pearson, M. R., additional, Stocki, T. J., additional, Swanson, T. B., additional, and Trinczek, M., additional

Published
2005
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5. Novel Search for HeavyνMixing from theβ+Decay ofK38mConfined in an Atom Trap

Author

Trinczek, M., primary, Gorelov, A., additional, Melconian, D., additional, Alford, W. P., additional, Asgeirsson, D., additional, Ashery, D., additional, Behr, J. A., additional, Bricault, P. G., additional, D’Auria, J. M., additional, Deutsch, J., additional, Dilling, J., additional, Dombsky, M., additional, Dubé, P., additional, Eaton, S., additional, Fingler, J., additional, Giesen, U., additional, Gu, S., additional, Häusser, O., additional, Jackson, K. P., additional, Lee, B., additional, Schmid, J. H., additional, Stocki, T. J., additional, Swanson, T. B., additional, and Wong, W., additional

Published
2003
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6. Precise Half-Life Measurement for the Superallowed0+→0+βEmitter74Rb: First Results from the New Radioactive Beam Facility (ISAC) at TRIUMF

Author

Ball, G. C., primary, Bishop, S., additional, Behr, J. A., additional, Boisvert, G. C., additional, Bricault, P., additional, Cerny, J., additional, D'Auria, J. M., additional, Dombsky, M., additional, Hardy, J. C., additional, Iacob, V., additional, Leslie, J. R., additional, Lindner, T., additional, Macdonald, J. A., additional, Mak, H.-B., additional, Moltz, D. M., additional, Powell, J., additional, Savard, G., additional, and Towner, I. S., additional

Published
2001
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7. Magneto-optic Trapping ofβ-Decaying38Km,37Kfrom an on-line Isotope Separator

Author

Behr, J. A., primary, Gorelov, A., additional, Swanson, T., additional, Häusser, O., additional, Jackson, K. P., additional, Trinczek, M., additional, Giesen, U., additional, D'Auria, J. M., additional, Hardy, R., additional, Wilson, T., additional, Choboter, P., additional, Leblond, F., additional, Buchmann, L., additional, Dombsky, M., additional, Levy, C. D. P., additional, Roy, G., additional, Brown, B. A., additional, and Dilling, J., additional

Published
1997
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8. β-delayed α spectrum ofN16and theC12(α,γ)16O cross section at low energies

Author

Buchmann, L., primary, Azuma, R. E., additional, Barnes, C. A., additional, D’Auria, J. M., additional, Dombsky, M., additional, Giesen, U., additional, Jackson, K. P., additional, King, J. D., additional, Korteling, R. G., additional, McNeely, P., additional, Powell, J., additional, Roy, G., additional, Vincent, J., additional, Wang, T. R., additional, Wong, S. S. M., additional, and Wrean, P. R., additional

Published
1993
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9. Precision branching ratio measurement for the superallowed beta+ emitter 62Ga and isospin-symmetry-breaking corrections in A>or=62 nuclei.

Author

Hyland B, Svensson CE, Ball GC, Leslie JR, Achtzehn T, Albers D, Andreoiu C, Bricault P, Churchman R, Cross D, Dombsky M, Finlay P, Garrett PE, Geppert C, Grinyer GF, Hackman G, Hanemaayer V, Lassen J, Lavoie JP, Melconian D, Morton AC, Pearson CJ, Pearson MR, Phillips AA, Schumaker MA, Smith MB, Towner IS, Valiente-Dobón JJ, Wendt K, and Zganjar EF

Abstract

A high-precision branching ratio measurement for the superallowed beta+ decay of 62Ga was performed at the Isotope Separator and Accelerator radioactive ion beam facility. Nineteen gamma rays emitted following beta+ decay of 62Ga were identified, establishing the dominant superallowed branching ratio to be (99.861+/-0.011)%. Combined with recent half-life and Q-value measurements, this branching ratio yields a superallowed ft value of 3075.6+/-1.4 s for 62Ga decay. These results demonstrate the feasibility of high-precision superallowed branching ratio measurements in the A>or=62 mass region and provide the first stringent tests of the large isospin-symmetry-breaking effects predicted for these decays.

Published
2006
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10. Nuclear charge radii of 9,11Li: the influence of halo neutrons.

Author

Sánchez R, Nörtershäuser W, Ewald G, Albers D, Behr J, Bricault P, Bushaw BA, Dax A, Dilling J, Dombsky M, Drake GW, Götte S, Kirchner R, Kluge HJ, Kühl T, Lassen J, Levy CD, Pearson MR, Prime EJ, Ryjkov V, Wojtaszek A, Yan ZC, and Zimmermann C

Abstract

The nuclear charge radius of 11Li has been determined for the first time by high-precision laser spectroscopy. On-line measurements at TRIUMF-ISAC yielded a 7Li-11Li isotope shift (IS) of 25 101.23(13) MHz for the Doppler-free [FORMULA: SEE TEXT]transition. IS accuracy for all other bound Li isotopes was also improved. Differences from calculated mass-based IS yield values for change in charge radius along the isotope chain. The charge radius decreases monotonically from 6Li to 9Li, and then increases from 2.217(35) to 2.467(37) fm for 11Li. This is compared to various models, and it is found that a combination of halo neutron correlation and intrinsic core excitation best reproduces the experimental results.

Published
2006
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11. Scalar interaction limits from the beta-nu correlation of trapped radioactive atoms.

Author

Gorelov A, Melconian D, Alford WP, Ashery D, Ball G, Behr JA, Bricault PG, D'Auria JM, Deutsch J, Dilling J, Dombsky M, Dubé P, Fingler J, Giesen U, Glück F, Gu S, Häusser O, Jackson KP, Jennings BK, Pearson MR, Stocki TJ, Swanson TB, and Trinczek M

Abstract

We have set limits on contributions of scalar interactions to nuclear beta decay. A magneto-optical trap provides a localized source of atoms suspended in space, so the low-energy recoiling nuclei can freely escape and be detected in coincidence with the beta. This allows reconstruction of the neutrino momentum, and the measurement of the beta-nu correlation, in a more direct fashion than previously possible. The beta-nu correlation parameter of the 0(+)-->0(+) pure Fermi decay of (38)K(m) is a =0.9981+/-0.0030+0.0032 / -0.0037, consistent with the standard model prediction a =1.

Published
2005
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12. Novel search for heavy nu mixing from the beta+ decay of 38mK confined in an atom trap.

Author

Trinczek M, Gorelov A, Melconian D, Alford WP, Asgeirsson D, Ashery D, Behr JA, Bricault PG, D'Auria JM, Deutsch J, Dilling J, Dombsky M, Dubé P, Eaton S, Fingler J, Giesen U, Gu S, Häusser O, Jackson KP, Lee B, Schmid JH, Stocki TJ, Swanson TB, and Wong W

Abstract

A new technique, full neutrino momentum reconstruction, is used to set limits on the admixture of heavy neutrinos into the electron neutrino. We measure coincidences between nuclear recoils and positrons from the beta decay of trapped radioactive atoms and deduce the neutrino momentum. A search for peaks in the reconstructed recoil time-of-flight spectrum as a function of positron energy is performed. The admixture upper limits range from 4 x 10(-3) to 2 x 10(-2) and are the best direct limits for neutrinos (as opposed to antineutrinos) for the mass region of 0.7 to 3.5 MeV.

Published
2003
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13. Precise half-life measurement for the superallowed 0(+)-->0(+) beta emitter (74)Rb: first results from the new radioactive beam facility (ISAC) at TRIUMF.

Author

Ball GC, Bishop S, Behr JA, Boisvert GC, Bricault P, Cerny J, D'Auria JM, Dombsky M, Hardy JC, Iacob V, Leslie JR, Lindner T, Macdonald JA, Mak HB, Moltz DM, Powell J, Savard G, and Towner IS

Abstract

Presently, the world data for superallowed beta decay leads to a result in disagreement (at the 98% confidence level) with the predictions of the minimal standard model for the unitarity of the Cabibbo-Kobayashi-Maskawa matrix. Precise data for the superallowed 0(+)-->0(+) beta decay of (74)Rb would provide a critical test of the nucleus-dependent isospin symmetry-breaking corrections that must be calculated for these superallowed Fermi beta decays. The present work reports the first precise measurement of the half-life for (74)Rb ( t(1/2) = 64.761+/-0.031 ms). The data were obtained at the radioactive beam facility (ISAC) at TRIUMF using a beam of approximately 4000 (74)Rb ions s(-1).

Published
2001
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