Zobrazeno 1 - 8
of 8
pro vyhledávání: '"D. E. Roa"'
Autor:
R.W. Dunford, C. J. Lister, A. H. Wuosmaa, I. Ahmad, V. Nanal, L. Lamm, D. E. Roa, John P. Greene, Russell Richard Betts, N. I. Kaloskamis, B. B. Back, C. Conner, S. M. Fischer, J. P. Schiffer, R. Ganz
Publikováno v:
Physical Review C. 57:R2794-R2798
The internal pair conversion (IPC) of transitions in Pb nuclei has been studied. Recent calculations of IPC for transitions with energies up to 2 MeV predict large differences in the shapes of the angular correlations according to their magnetic or e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ec99df52c895ef6c5e84c0ef17f97bc
https://doi.org/10.1103/physrevc.57.r2794
https://doi.org/10.1103/physrevc.57.r2794
Autor:
I. Ahmad, S. M. Austin, B. B. Back, R. R. Betts, F. P. Calaprice, K. C. Chan, A. A. Chishti, C. Conner, R. W. Dunford, J. D. Fox, S. J. Freedman, M. Freer, J. S. Greenberg, S. B. Gazes, A. L. Hallin, T. Happ, D. Henderson, N. I. Kaloskamis, E. Kashy, W. Kutschera, J. Last, C. J. Lister, M. Liu, M. R. Maier, D. J. Mercer, D. Mikolas, P. A. A. Perera, M. D. Rhein, D. E. Roa, J. P. Schiffer, T. A. Trainor, P. Wilt, J. S. Winfield, M. Wolanski, F. L. H. Wolfs, A. H. Wuosmaa, G. Xu, A. Young, J. E. Yurkon
Publikováno v:
Physical Review C. 55:R2755-R2759
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fb2f70dfe23016cb69662cd115db781
https://doi.org/10.1103/physrevc.55.r2755
https://doi.org/10.1103/physrevc.55.r2755
Autor:
I. Ahmad, Sam M. Austin, B. B. Back, R. R. Betts, F. P. Calaprice, K. C. Chan, A. Chishti, C. Conner, R. W. Dunford, J. D. Fox, S. J. Freedman, M. Freer, S. B. Gazes, A. L. Hallin, T. Happ, D. Henderson, N. I. Kaloskamis, E. Kashy, W. Kutschera, J. Last, C. J. Lister, M. Liu, M. R. Maier, D. J. Mercer, D. Mikolas, P. A. A. Perera, M. D. Rhein, D. E. Roa, J. P. Schiffer, T. A. Trainor, P. Wilt, J. S. Winfield, M. R. Wolanski, F. L. H. Wolfs, A. H. Wuosmaa, G. Xu, A. Young, J. E. Yurkon
Publikováno v:
Physical Review Letters. 78:618-621
Positron production in {sup 238}U+{sup 232}Th and {sup 238}U+{sup 181}Ta collisions near the Coulomb barrier has been studied. Earlier experiments reported narrow lines in the spectra of positrons, accumulated without the requirement of electrons det
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c5414947cfc35b3e56791b33bd914e5
https://doi.org/10.1103/physrevlett.78.618
https://doi.org/10.1103/physrevlett.78.618
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 368:307-313
A rotating target wheel system built for the Atlas Positron Experiment (APEX) is described. It is designed so that targets could withstand the heating caused by the energy loss of intense heavy ion beams. A unique feature is the use of a digital enco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71765cf9295a0ce21f3ed8a3ce77241d
https://doi.org/10.1016/0168-9002(95)00615-x
https://doi.org/10.1016/0168-9002(95)00615-x
Autor:
I. Ahmad, S. M. Austin, B. B. Back, R. R. Betts, F. P. Calaprice, K. C. Chan, A. Chishti, P. Chowdhury, C. Conner, R. W. Dunford, J. D. Fox, S. J. Freedman, M. Freer, S. B. Gazes, A. L. Hallin, T. Happ, D. Henderson, N. I. Kaloskamis, E. Kashy, W. Kutschera, J. Last, C. J. Lister, M. Liu, M. R. Maier, D. J. Mercer, D. Mikolas, P. A. A. Perera, M. D. Rhein, D. E. Roa, J. P. Schiffer, T. A. Trainor, P. Wilt, J. S. Winfield, M. Wolanski, F. L. H. Wolfs, A. H. Wuosmaa, G. Xu, A. Young, J. E. Yurkon
Publikováno v:
Physical Review Letters. 75:2658-2661
The first results are presented from a new experiment, APEX, designed to study the previously reported sharp lines in sum-energy spectra of positrons and electrons produced in collisions of very heavy ions. Data were collected for {sup 238}U+{sup 181
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65d8325a5bc684f3037ee74fe5ea14ff
https://doi.org/10.1103/physrevlett.75.2658
https://doi.org/10.1103/physrevlett.75.2658
Autor:
D. E. Roa, R. K. Smither, X. Zhang, K Nie, Y. Y. Shieh, N. S. Ramsinghani, N. Milne, J. V. Kuo, J. L. Redpath, M. S. A. L. Al-Ghazi, P. Caligiuri
Publikováno v:
Focusing Telescopes in Nuclear Astrophysics ISBN: 9781402053030
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40dae4100dde7866bc5dbe243ec0b3b7
https://doi.org/10.1007/978-1-4020-5304-7_24
https://doi.org/10.1007/978-1-4020-5304-7_24
Autor:
P. Wilt, A. Chishti, M. Freer, J. S. Winfield, Frank Calaprice, A. L. Hallin, C. J. Lister, E. Kashy, M. Wolanski, F.L.H. Wolfs, P.A.A. Perera, D. Mikolas, K. C. Chan, M. R. Maier, A. H. Wuosmaa, D. M. Mercer, Sam M. Austin, Thomas A. Trainor, R. R. Betts, M. D. Rhein, S. J. Freedman, Albert Young, J. D. Fox, R.W. Dunford, B.B. Back, N. I. Kaloskamis, I. Ahmad, C. Conner, S. B. Gazes, D. J. Henderson, T. Happ, J. Yurkon, J. P. Schiffer, D. E. Roa, W. Kutschera, M. Liu
Publikováno v:
Physical Review C. 60
The production of positron-electron pairs in collisions of {sup 238}U+{sup 232}Th at 5.95 MeV/nucleon, and of {sup 238}U+{sup 181}Ta at 5.95, 6.1, and 6.3 MeV/nucleon, has been studied with the APEX spectrometer at Argonne National Laboratory. Severa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::475922e1f098c1e7b966afe19bd880ff
https://doi.org/10.1103/physrevc.60.064601
https://doi.org/10.1103/physrevc.60.064601
Autor:
I. Ahmad, S. M. Austin, B. B. Back, R. R. Betts, F. P. Calaprice, K. C. Chan, A. Chishti, P. Chowdhury, C. Conner, R. W. Dunford, J. D. Fox, S. J. Freedman, M. Freer, S. Gazes, A. L. Hallin, T. Happ, N. I. Kaloskamis, E. Kashy, W. Kutschera, J. Last, C. J. Lister, M. Liu, M. R. Maier, D. J. Mercer, D. Mikolas, P. A. A. Perera, M. D. Rhein, D. E. Roa, J. P. Schiffer, T. A. Trainor, P. Wilt, J. S. Winfield, M. Wolanski, F. L. H. Wolfs, A. H. Wuosmaa, A. Young, J. E. Yurkon
Publikováno v:
Advances in Nuclear Dynamics 2 ISBN: 9781475790887
Narrow structures first reported in positron singles energy spectra [1, 2, 3, 4, 5, 6, 7] and later in electron-positron energy distributions [5, 8, 9, 10, 11, 12] associated with collisions of very heavy ions near the Coulomb barrier have been an ou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c488d92bed5f5433a32a0f349b5bb3f9
https://doi.org/10.1007/978-1-4757-9086-3_42
https://doi.org/10.1007/978-1-4757-9086-3_42