Zobrazeno 1 - 10
of 15
pro vyhledávání: '"D B Cassidy"'
Publikováno v:
New Journal of Physics, Vol 17, Iss 4, p 043059 (2015)
The use of mesoporous silica films for the production and study of positronium (Ps) atoms has become increasingly important in recent years, providing a robust source of free Ps in vacuum that may be used for a wide variety of experiments, including
Externí odkaz:
https://doaj.org/article/13aea098b1264ff5a753a222af73bea2
Publikováno v:
Physical Review A. 107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0ff656b089541b100cc83012677a22a
https://doi.org/10.1103/physreva.107.042810
https://doi.org/10.1103/physreva.107.042810
Autor:
T. J. Babij, D. B. Cassidy
Publikováno v:
The European Physical Journal D. 76
Abstract We describe an experimental arrangement suitable for performing microwave spectroscopy measurements of the positronium (Ps) $$n=2$$ n = 2 fine structure using Ramsey interferometry. Simulations are presented concerning the production of ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1cd0ca34a4a3cb7473ec783650888f9
https://doi.org/10.1140/epjd/s10053-022-00448-w
https://doi.org/10.1140/epjd/s10053-022-00448-w
Publikováno v:
Physical Review A. 104
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f517e69ce68ab134f040178c90d7cec3
https://doi.org/10.1103/physreva.104.062810
https://doi.org/10.1103/physreva.104.062810
Autor:
G. Dufour, D. B. Cassidy, P. Crivelli, P. Debu, A. Lambrecht, V. V. Nesvizhevsky, S. Reynaud, A. Yu. Voronin, T. E. Wall
Publikováno v:
Advances in High Energy Physics, Vol 2015 (2015)
Different experiments are ongoing to measure the effect of gravity on cold neutral antimatter atoms such as positronium, muonium, and antihydrogen. Among those, the project GBAR at CERN aims to measure precisely the gravitational fall of ultracold an
Externí odkaz:
https://doaj.org/article/43028a584d9742b2810c254fb275f552
Publikováno v:
Physical review letters. 114(17)
Rydberg positronium (Ps) atoms have been prepared in selected Stark states via two-step (1s→2p→nd/ns) optical excitation. Two methods have been used to achieve Stark-state selection: a field ionization filter that transmits the outermost states w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::a917187f5326553cfe360ff1368edc42
https://pubmed.ncbi.nlm.nih.gov/25978227
https://pubmed.ncbi.nlm.nih.gov/25978227
Autor:
D. B. Cassidy, R. G. Greaves, S. H. M. Deng, N. Lopez-Valdez, V. Meligne, A. P. Mills, Floyd D. McDaniel, Barney L. Doyle
Publikováno v:
AIP Conference Proceedings.
Positrons have the potential to be extremely useful probes of solid state and atomic systems, but this potential is far from being realised because antimatter is not readily available. The most common source of positrons used in laboratories utilises
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da45fb586e7832210d653064f612ed53
https://doi.org/10.1063/1.3120176
https://doi.org/10.1063/1.3120176
Publikováno v:
AIP Conference Proceedings.
The use of positron plasmas to produce intense positron pulses has made it possible to create relatively large instantaneous positronium densities. This in turn provides an opportunity to perform improved precision spectroscopy measurements on positr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c729fde9f62f8be69647d7ed1a4ccdbb
https://doi.org/10.1063/1.2977858
https://doi.org/10.1063/1.2977858
Autor:
D B, Cassidy, R W, Smalling
Publikováno v:
Indian heart journal. 42(1)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::4627057c34fba64719029889c4d283f4
https://pubmed.ncbi.nlm.nih.gov/2351395
https://pubmed.ncbi.nlm.nih.gov/2351395
Autor:
D B, Cassidy, R W, Smalling
Publikováno v:
Critical care clinics. 5(3)
Several issues confront the physician treating the patient with an acute infarction. If the patient is a thrombolytic candidate, a 20 to 30 per cent failure rate still exists, and it is difficult to predict on clinical grounds who has had a successfu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::c8f23f67a438fa84d441771204bc50df
https://pubmed.ncbi.nlm.nih.gov/2527586
https://pubmed.ncbi.nlm.nih.gov/2527586