Search: (WFRF:(Amole C.)) conttype:(refereed)
> (2012) >
Resonant quantum tr...
Resonant quantum transitions in trapped antihydrogen atoms
- Article/chapterEnglish2012
Publisher, publication year, extent ...
-
2012-03-07
-
Springer Science and Business Media LLC,2012
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:su-76152
-
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-76152URI
-
https://doi.org/10.1038/nature10942DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
43
-
The hydrogen atom is one of the most important and influential model systems in modern physics. Attempts to understand its spectrum are inextricably linked to the early history and development of quantum mechanics. The hydrogen atom's stature lies in its simplicity and in the accuracy with which its spectrum can be measured(1) and compared to theory. Today its spectrum remains a valuable tool for determining the values of fundamental constants and for challenging the limits of modern physics, including the validity of quantum electrodynamics and-by comparison with measurements on its antimatter counterpart, antihydrogen-the validity of CPT (charge conjugation, parity and time reversal) symmetry. Here we report spectroscopy of a pure antimatter atom, demonstrating resonant quantum transitions in antihydrogen. We have manipulated the internal spin state(2,3) of antihydrogen atoms so as to induce magnetic resonance transitions between hyperfine levels of the positronic ground state. We used resonant microwave radiation to flip the spin of the positron in antihydrogen atoms that were magnetically trapped(4-6) in the ALPHA apparatus. The spin flip causes trapped anti-atoms to be ejected from the trap. We look for evidence of resonant interaction by comparing the survival rate of trapped atoms irradiated with microwaves on-resonance to that of atoms subjected to microwaves that are off-resonance. In one variant of the experiment, we detect 23 atoms that survive in 110 trapping attempts with microwaves off-resonance (0.21 per attempt), and only two atoms that survive in 103 attempts with microwaves on-resonance (0.02 per attempt). We also describe the direct detection of the annihilation of antihydrogen atoms ejected by the microwaves.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Ashkezari, M. D.
(author)
-
Baquero-Ruiz, M.
(author)
-
Bertsche, W.
(author)
-
Bowe, P. D.
(author)
-
Butler, E.
(author)
-
Capra, A.
(author)
-
Cesar, C. L.
(author)
-
Charlton, M.
(author)
-
Deller, A.
(author)
-
Donnan, P. H.
(author)
-
Eriksson, S.
(author)
-
Fajans, J.
(author)
-
Friesen, T.
(author)
-
Fujiwara, M. C.
(author)
-
Gill, D. R.
(author)
-
Gutierrez, A.
(author)
-
Hangst, J. S.
(author)
-
Hardy, W. N.
(author)
-
Hayden, M. E.
(author)
-
Humphries, A. J.
(author)
-
Isaac, C. A.
(author)
-
Jonsell, SvanteStockholms universitet,Fysikum(Swepub:su)svjon
(author)
-
Kurchaninov, L.
(author)
-
Little, A.
(author)
-
Madsen, N.
(author)
-
McKenna, J. T. K.
(author)
-
Menary, S.
(author)
-
Napoli, S. C.
(author)
-
Nolan, P.
(author)
-
Olchanski, K.
(author)
-
Olin, A.
(author)
-
Pusa, P.
(author)
-
Rasmussen, C. O.
(author)
-
Robicheaux, F.
(author)
-
Sarid, E.
(author)
-
Shields, C. R.
(author)
-
Silveira, D. M.
(author)
-
Stracka, S.
(author)
-
So, C.
(author)
-
Thompson, R. I.
(author)
-
van der Werf, D. P.
(author)
-
Wurtele, J. S.
(author)
-
Stockholms universitetFysikum
(creator_code:org_t)
Related titles
-
In:Nature: Springer Science and Business Media LLC483:7390, s. 439-U860028-08361476-4687
Internet link
Find in a library
-
Nature
(Search for host publication in LIBRIS)
To the university's database
- By the author/editor
-
Amole, C.
-
Ashkezari, M. D.
-
Baquero-Ruiz, M.
-
Bertsche, W.
-
Bowe, P. D.
-
Butler, E.
-
show more...
-
Capra, A.
-
Cesar, C. L.
-
Charlton, M.
-
Deller, A.
-
Donnan, P. H.
-
Eriksson, S.
-
Fajans, J.
-
Friesen, T.
-
Fujiwara, M. C.
-
Gill, D. R.
-
Gutierrez, A.
-
Hangst, J. S.
-
Hardy, W. N.
-
Hayden, M. E.
-
Humphries, A. J.
-
Isaac, C. A.
-
Jonsell, Svante
-
Kurchaninov, L.
-
Little, A.
-
Madsen, N.
-
McKenna, J. T. K ...
-
Menary, S.
-
Napoli, S. C.
-
Nolan, P.
-
Olchanski, K.
-
Olin, A.
-
Pusa, P.
-
Rasmussen, C. O.
-
Robicheaux, F.
-
Sarid, E.
-
Shields, C. R.
-
Silveira, D. M.
-
Stracka, S.
-
So, C.
-
Thompson, R. I.
-
van der Werf, D. ...
-
Wurtele, J. S.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
- Articles in the publication
-
Nature
- By the university
-
Stockholm University