CERN Accelerating science

CERN Document Server 2,040 záznamov nájdených  1 - 10ďalšíkoniec  skoč na záznam: Hľadanie trvalo 0.92 sekúnd. 
1.
Observation of Hyperfine Transitions in Trapped Ground-State Antihydrogen / Olin, Arthur (Victoria U. ; TRIUMF) /for the ALPHA Collaboration
This paper discusses the first observation of stimulated magnetic resonance transitions between the hyperfine levels of trapped ground state atomic antihydrogen, confirming its presence in the ALPHA apparatus. Our observations show that these transitions are consistent with the values in hydrogen to within 4~parts~in~$10^3$. [...]
arXiv:1504.05523.- 2015-04-23 - 6 p. - Published in : Hyperfine Interact. 233 (2015) 41-46 Fulltext: 1504.05523 - PDF; arXiv:1504.05523 - PDF; External link: Preprint
In : 5th International Conference on Exotic Atoms and Related Topics, Vienna, Austria, 15 - 19 Sep 2014, pp.41-46
2.
Probing Trapped Antihydrogen: In Situ Diagnostics and Observations of Quantum Transitions / Friesen, T P
Antihydrogen, the bound state of a positron and an antiproton, is the simplest pure anti-atomic system and an excellent candidate to test the symmetry between matter and antimatter [...]
CERN-THESIS-2014-402. - 189 p.

Full text - Full text - Full text
3.
Precision measurements on trapped antihydrogen in the ALPHA experiment / Eriksson, S. (Swansea U.)
Both the 1S-2S transition and the ground state hyperfine spectrum have been observed in trapped antihydrogen. The former constitutes the first observation of resonant interaction of light with an anti-atom, and the latter is the first detailed measurement of a spectral feature in antihydrogen. [...]
arXiv:1803.10057.- 2018-03-28 - 18 p. - Published in : Philos. Trans. R. Soc. Lond. A: 376 (2018) , no. 2116, pp. 20170268 Preprint: PDF;
In : Antiproton Physics in the ELENA Era : Theo Murphy meeting, Newport Pagnell, Buckinghamshire, UK, 4 - 5 Sep 2017, pp.20170268
4.
Resonant quantum transitions in trapped antihydrogen atoms / ALPHA Collaboration
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. [...]
2012 - Published in : Nature 483 (2012) 439-443 Fulltext: PDF;
5.
Lifetime of magnetically trapped antihydrogen in ALPHA / Capra, Andrea (TRIUMF) /ALPHA Collaboration
How long antihydrogen atoms linger in the ALPHA magnetic trap is an important characteristic of the ALPHA apparatus. The initial trapping experiments in 2010 [1] were conducted with 38 detected antiatoms confined for 172 ms and in 2011 [2] with seven for 1000 s [...]
arXiv:2005.03805.- 2019-01-07 - 6 p. - Published in : Hyperfine Interact. Fulltext: PDF;
In : 13th International Conference on Low Energy Antiproton Physics, Paris, France, 12 - 16 Mar 2018, pp.9
6.
Cold antihydrogen experiments and radial compression of antiproton clouds in the ALPHA apparatus at CERN / Gutierrez, A
Antihydrogen is the simplest neutral antimatter atom [...]
CERN-THESIS-2016-333. -


2429/56279
10.14288/1.0223173
Full text
7.
In-beam measurement of the hydrogen hyperfine splitting - towards antihydrogen spectroscopy / Diermaier, M. (Stefan Meyer Inst. Subatomare Phys.) ; Jepsen, C.B. (CERN) ; Kolbinger, B. (Stefan Meyer Inst. Subatomare Phys.) ; Malbrunot, C. (CERN ; Stefan Meyer Inst. Subatomare Phys.) ; Massiczek, O. (Stefan Meyer Inst. Subatomare Phys.) ; Sauerzopf, C. (Stefan Meyer Inst. Subatomare Phys.) ; Simon, M.C. (Stefan Meyer Inst. Subatomare Phys.) ; Zmeskal, J. (Stefan Meyer Inst. Subatomare Phys.) ; Widmann, E. (Stefan Meyer Inst. Subatomare Phys.) /Asacusa AD-3 collaboration
Antihydrogen, the lightest atom consisting purely of antimatter, is an ideal laboratory to study the CPT symmetry by comparison to hydrogen. With respect to absolute precision, transitions within the ground-state hyperfine structure (GS-HFS) are most appealing by virtue of their small energy separation. [...]
arXiv:1610.06392; CERN-EP-2016-268.- Geneva : CERN, 2017 - 10 p. - Published in : Nature Commun. 8 (2017) 5749 Fulltext: PDF; External link: Preprint
8.
Evaluation and Analysis of Microwave Flex Resonators designed to induce the spin-flip in Positrons within the Antihydrogen atoms trapped at the ALPHA apparatus / Ovando Villegas, Themis Coral
The absence of antimatter, the counterpart to matter, represents one of the most profound mysteries in modern physics and is the subject of extensive research at CERN (the European Organization for Nuclear Research). [...]
CERN-STUDENTS-Note-2024-160.
- 2024
Access to fulltext
9.
Detecting Antihydrogen: The Challenges and the Applications / Fujiwara, Makoto C. (TRIUMF)
ATHENA's first detection of cold antihydrogen atoms relied on their annihilation signatures in a sophisticated particle detector. We will review the features of the ATHENA detector and its applications in trap physics. [...]
hep-ex/0507082; TRI-PP-05-23; TRI-PP-2005-23.- Burnaby, BC : TRIUMF, 2005-10-12 - 11 p. - Published in : AIP Conf. Proc.: 793 (2005) , pp. 111-121 Access to fulltext document: PDF; Fulltext: PDF; External links: hep-ex/0507082 PDF; Published version from AIP
In : Conference on Physics with Ultra Slow Antiproton Beams, Wako, Japan, 14 - 16 Mar 2005, pp.111-121
10.

CERN-PHOTO-202208-132
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Aerial view of the ALPHA experimental area in the AD hall
The ALPHA (Antihydrogen Laser Physics Apparatus) e [...]
12-08-2022
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