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Dive into the research topics where Michael Raymond Dragowsky is active.

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Featured researches published by Michael Raymond Dragowsky.


Physical Review Letters | 1998

Search for Strange Matter by Heavy Ion Activation

Maria C. Perillo Isaac; Y.D. Chan; R. M. Clark; Deleplanque; Michael Raymond Dragowsky; P. Fallon; R.-M. Larimer; I. Y. Lee; A. O. Macchiavelli; R. W. MacLeod; K. Nishiizumi; E. B. Norman; L.S. Schroeder; F. S. Stephens; I. D. Goldman

We present the results of an experimental search for stable strange matter using the heavy ion technique, based on properties of strangelets. We studied samples of a meteorite, terrestrial nickel ore, and lunar soil. Our search improved by 2 to 3 orders of magnitude the existing experimental limit on the strange matter content in normal matter and enabled probing the flux of low mass strangelets on the lunar surface for the first time.p {copyright} {ital 1998} {ital The American Physical Society}


Nuclear Physics | 1999

Cosmic-ray history derived from the 54Mn, 56Ni and 144Pm chronometers

Koorosh Zaerpoor; Y.D. Chan; D.E. DiGregorio; Michael Raymond Dragowsky; M. M. Hindi; Maria C. Perillo Isaac; Kenneth Saul Krane; R.-M. Larimer; A. O. Macchiavelli; R. W. MacLeod; Predrag Miocinovic; Eric B. Norman; S. J. Robinson

Sources of 54 Mn, 55 Ni, and 144 Pm were placed at the center of the Gammasphere array and searches were made for the astrophysically interesting β + decay modes of these isotopes. The results of these searches are presented and the implications for cosmic-ray physics are discussed.


Physical Review Letters | 1997

Galactic Confinement Time of Iron-Group Cosmic Rays Derived fromthe Mn-54 Chronometer

K. Zaerpoor; Y.D. Chan; D. E. Digregorio; Michael Raymond Dragowsky; M. M. Hindi; Maria C. Perillo Isaac; Kenneth Saul Krane; R.-M. Larimer; A. O. Macchiavelli; R. W. MacLeod; P. Miocinovic; E. B. Norman


Physics Letters B | 1999

Quadrupole-octupole coupled states in 144Nd

S. J. Robinson; M.M Hindi; H.G Börner; Y.D. Chan; D. E. Digregorio; C Doll; Michael Raymond Dragowsky; Marie Harder; Maria C. Perillo Isaac; K. S. Krane; R.-M. Larimer; Augusto Macchiavelli; R. W. MacLeod; Predrag Miocinovic; Eric B. Norman; A Shadkam; Koorosh Zaerpoor


Physical Review Letters | 1999

Erratum: Galactic Confinement Time of Iron-Group Cosmic Rays Derived from theM54nChronometer [Phys. Rev. Lett. 79, 4306 (1997)]

K. Zaerpoor; Y.D. Chan; D. E. Digregorio; Michael Raymond Dragowsky; M. M. Hindi; Maria C. Perillo Isaac; Kenneth Saul Krane; R.-M. Larimer; A. O. Macchiavelli; R. W. MacLeod; P. Miocinovic; E. B. Norman


Physical Review C | 1998

Cosmic-ray half-life of 144 Pm

Koorosh Zaerpoor; Y.D. Chan; D.E. DiGregorio; Michael Raymond Dragowsky; M. M. Hindi; Maria C. Perillo Isaac; K. S. Krane; R.-M. Larimer; A. O. Macchiavelli; R. W. MacLeod; Predrag Miocinovic; Eric B. Norman; S. J. Robinson


Archive | 2002

An Ultra Low Background Counting Facility at NUSL

Andre Stephane Hamer; T. J. Bowles; Michael Raymond Dragowsky; Andrew Hime; Y.D. Chan; K.T. Lesko; Alan Wing Pok Poon; Jeffrey S. Nico; A. Piepke; J. F. Wilkerson


Nuclear Physics | 1999

Cosmic-ray history derived from the Mn, Ni and Pm chronometers

Koorosh Zaerpoor; Y.D. Chan; D.E. DiGregorio; Michael Raymond Dragowsky; M. M. Hindi; Maria C. Perillo Isaac; Kenneth Saul Krane; R.-M. Larimer; A. O. Macchiavelli; R. W. MacLeod


Archive | 1999

Nuclear Collective Motion in the N=90 Isotones ^152Sm, ^154Gd, and ^156Dy

W. D. Kulp; B. D. MacDonald; J. Wood; Michael Raymond Dragowsky; Kenneth Saul Krane; J. Loats; P. D. Schmelzenbach; C. J. Stapels; R.-M. Larimer; Eric B. Norman; A. Piechaczek


Physical Review C | 1998

Cosmic-ray half-life of {sup 144}Pm

Koorosh Zaerpoor; Michael Raymond Dragowsky; K. S. Krane; Y.D. Chan; Maria C. Perillo Isaac; R.-M. Larimer; A. O. Macchiavelli; R. W. MacLeod; E. B. Norman; D.E. DiGregorio; M. M. Hindi; S. J. Robinson; Predrag Miocinovic

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Maria C. Perillo Isaac

Lawrence Berkeley National Laboratory

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R.-M. Larimer

Lawrence Berkeley National Laboratory

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R. W. MacLeod

Lawrence Berkeley National Laboratory

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Eric B. Norman

Lawrence Berkeley National Laboratory

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Y.D. Chan

Lawrence Berkeley National Laboratory

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A. O. Macchiavelli

Lawrence Berkeley National Laboratory

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M. M. Hindi

Tennessee Technological University

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