Zobrazeno 1 - 10
of 119
pro vyhledávání: '"J. S. Hangst"'
Autor:
M. Ahmadi, B. X. R. Alves, C. J. Baker, W. Bertsche, A. Capra, S. Cohen, C. Torkzaban, C. L. Cesar, M. Charlton, R. Collister, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, P. Granum, J. S. Hangst, M. E. Hayden, D. Hodgkinson, C. A. Isaac, M. A. Johnson, S. A. Jones, S. Jonsell, N. Kalem, N. Madsen, D. Maxwell, J. T. K. McKenna, S. Menary, T. Momose, J. Munich, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, C. So, G. Stutter, T. D. Tharp, R. I. Thompson, D. P. van der Werf, J. S. Wurtele
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p L032065 (2024)
Magnetically trapped antihydrogen atoms can be cooled by expanding the volume of the trap in which they are confined. We report a proof-of-principle experiment in which antiatoms are deliberately released from expanded and static traps. Antiatoms esc
Externí odkaz:
https://doaj.org/article/d19c1188d58d4810a8dab9d14ca219ac
Autor:
C. J. Baker, W. Bertsche, A. Capra, C. L. Cesar, M. Charlton, A. Christensen, R. Collister, A. Cridland Mathad, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, P. Grandemange, P. Granum, J. S. Hangst, M. E. Hayden, D. Hodgkinson, E. D. Hunter, C. A. Isaac, M. A. Johnson, J. Jones, S. A. Jones, S. Jonsell, A. Khramov, L. Kurchaninov, H. Landsberger, N. Madsen, D. Maxwell, J. T. K. McKenna, S. Menary, T. Momose, P. S. Mullan, J. J. Munich, K. Olchanski, A. Olin, J. Peszka, A. Powell, P. Pusa, C.Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, C. So, G. Stutter, T. D. Tharp, R. I. Thompson, C. Torkzaban, D. P. van der Werf, E. Ward, J. S. Wurtele
Publikováno v:
Physical Review Research, Vol 6, Iss 1, p L012008 (2024)
Antiprotons created by laser ionization of antihydrogen are observed to rapidly escape the ALPHA trap. Further, positron plasmas heat more quickly after the trap is illuminated by laser light for several hours. These phenomena can be caused by patch
Externí odkaz:
https://doaj.org/article/6e419df41d5c48b8b6bb67a3aa4384f4
Autor:
C. J. Baker, W. Bertsche, A. Capra, C. L. Cesar, M. Charlton, A. Cridland Mathad, S. Eriksson, A. Evans, N. Evetts, S. Fabbri, J. Fajans, T. Friesen, M. C. Fujiwara, P. Grandemange, P. Granum, J. S. Hangst, M. E. Hayden, D. Hodgkinson, C. A. Isaac, M. A. Johnson, J. M. Jones, S. A. Jones, S. Jonsell, L. Kurchaninov, N. Madsen, D. Maxwell, J. T. K. McKenna, S. Menary, T. Momose, P. Mullan, K. Olchanski, A. Olin, J. Peszka, A. Powell, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, G. Stutter, C. So, T. D. Tharp, R. I. Thompson, D. P. van der Werf, J. S. Wurtele
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Positrons are key to the production of cold antihydrogen. Here the authors report the sympathetic cooling of positrons by interacting them with laser-cooled Be+ ions resulting in a three-fold reduction of the temperature of positrons for antihydrogen
Externí odkaz:
https://doaj.org/article/6ecc6c4dbf8845aa90772d31cc0d11c7
Autor:
C. J. Baker, W. Bertsche, A. Capra, C. L. Cesar, M. Charlton, A. J. Christensen, R. Collister, A. Cridland Mathad, S. Eriksson, A. Evans, N. Evetts, S. Fabbri, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, P. Grandemange, P. Granum, J. S. Hangst, M. E. Hayden, D. Hodgkinson, C. A. Isaac, M. A. Johnson, J. M. Jones, S. A. Jones, A. Khramov, L. Kurchaninov, N. Madsen, D. Maxwell, J. T. K. McKenna, S. Menary, T. Momose, P. S. Mullan, J. J. Munich, K. Olchanski, J. Peszka, A. Powell, C. Ø. Rasmussen, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, C. So, D. M. Starko, G. Stutter, T. D. Tharp, R. I. Thompson, C. Torkzaban, D. P. van der Werf, J. S. Wurtele
Publikováno v:
Physical Review Accelerators and Beams, Vol 26, Iss 4, p 040101 (2023)
The ALPHA Collaboration, based at the CERN Antiproton Decelerator, has recently implemented a novel beamline for low energy (≲100 eV) positron and antiproton transport between cylindrical Penning traps that have strong axial magnetic fields. Here,
Externí odkaz:
https://doaj.org/article/0c72c1a9abfa43aaad16baab2f1e8bd7
Autor:
M. Ahmadi, B. X. R. Alves, C. J. Baker, W. Bertsche, E. Butler, A. Capra, C. Carruth, C. L. Cesar, M. Charlton, S. Cohen, R. Collister, S. Eriksson, A. Evans, N. Evetts, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, C. A. Isaac, A. Ishida, M. A. Johnson, S. A. Jones, S. Jonsell, L. Kurchaninov, N. Madsen, M. Mathers, D. Maxwell, J. T. K. McKenna, S. Menary, J. M. Michan, T. Momose, J. J. Munich, P. Nolan, K. Olchanski, A. Olin, P. Pusa, C. Ø. Rasmussen, F. Robicheaux, R. L. Sacramento, M. Sameed, E. Sarid, D. M. Silveira, S. Stracka, G. Stutter, C. So, T. D. Tharp, J. E. Thompson, R. I. Thompson, D. P. van der Werf, J. S. Wurtele
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-6 (2017)
Antihydrogen studies are important in testing the fundamental principles of physics but producing antihydrogen in large amounts is challenging. Here the authors demonstrate an efficient and high-precision method for trapping and stacking antihydrogen
Externí odkaz:
https://doaj.org/article/9e85815eade843d6bbb9a2dec5705275
Autor:
T. D. Tharp, A. Evans, D. M. Silveira, N. Evetts, P. S. Mullan, Joel Fajans, G. Stutter, D. Hodgkinson, K. Olchanski, Jonathan Wurtele, Niels Madsen, M. C. Fujiwara, A. Powell, Francis Robicheaux, J. Peszka, P. Grandemange, M. Sameed, A. Capra, C. L. Cesar, T. Friesen, J. M. Jones, A. Olin, D. P. van der Werf, C. A. Isaac, J. T. K. McKenna, P. Granum, M. A. Johnson, J. S. Hangst, Leonid Kurchaninov, M. Charlton, S. Fabbri, R. L. Sacramento, Takamasa Momose, C. Ø. Rasmussen, C. J. Baker, Robert Thompson, S. Menary, Petteri Pusa, Chukman So, Svante Jonsell, Michael E. Hayden, W. Bertsche, A. Cridland Mathad, S. A. Jones, D. Maxwell, E. Sarid, Stefan Eriksson
Publikováno v:
NATURE COMMUNICATIONS
ALPHA Collaboration 2021, ' Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production ', Nature Communications, vol. 12, no. 1, 6139 . https://doi.org/10.1038/s41467-021-26086-1
Baker, C J, Bertsche, W, Capra, A, Cesar, C L, Charlton, M, Mathad, A C, Eriksson, S, Evans, A, Evetts, N, Fabbri, S, Fajans, J, Friesen, T, Fujiwara, M C, Grandemange, P, Granum, P, Hangst, J S, Hayden, M E, Hodgkinson, D, Isaac, C A, Johnson, M A, Jones, J M, Jones, S A, Jonsell, S, Kurchaninov, L, Madsen, N, Maxwell, D, McKenna, J T K, Menary, S, Momose, T, Mullan, P, Olchanski, K, Olin, A, Peszka, J, Powell, A, Pusa, P, Rasmussen, C, Robicheaux, F, Sacramento, R L, Sameed, M, Sarid, E, Silveira, D M, Stutter, G, So, C, Tharp, T D, Thompson, R I, van der Werf, D P & Wurtele, J S 2021, ' Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production ', Nature Communications, vol. 12, 6139 . https://doi.org/10.1038/s41467-021-26086-1
Nature communications, vol 12, iss 1
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Nature Communications
ALPHA Collaboration 2021, ' Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production ', Nature Communications, vol. 12, no. 1, 6139 . https://doi.org/10.1038/s41467-021-26086-1
Baker, C J, Bertsche, W, Capra, A, Cesar, C L, Charlton, M, Mathad, A C, Eriksson, S, Evans, A, Evetts, N, Fabbri, S, Fajans, J, Friesen, T, Fujiwara, M C, Grandemange, P, Granum, P, Hangst, J S, Hayden, M E, Hodgkinson, D, Isaac, C A, Johnson, M A, Jones, J M, Jones, S A, Jonsell, S, Kurchaninov, L, Madsen, N, Maxwell, D, McKenna, J T K, Menary, S, Momose, T, Mullan, P, Olchanski, K, Olin, A, Peszka, J, Powell, A, Pusa, P, Rasmussen, C, Robicheaux, F, Sacramento, R L, Sameed, M, Sarid, E, Silveira, D M, Stutter, G, So, C, Tharp, T D, Thompson, R I, van der Werf, D P & Wurtele, J S 2021, ' Sympathetic cooling of positrons to cryogenic temperatures for antihydrogen production ', Nature Communications, vol. 12, 6139 . https://doi.org/10.1038/s41467-021-26086-1
Nature communications, vol 12, iss 1
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Nature Communications
The positron, the antiparticle of the electron, predicted by Dirac in 1931 and discovered by Anderson in 1933, plays a key role in many scientific and everyday endeavours. Notably, the positron is a constituent of antihydrogen, the only long-lived ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33fd4887c81927e3f7b99237c350e8fa
Autor:
D. P. van der Werf, A. Little, M. E. Hayden, K. Olchanski, T. D. Tharp, Petteri Pusa, Joel Fajans, S. Menary, Z. Vendeiro, A. E. Charman, A. Capra, William Bertsche, M. D. Ashkezari, Leonid Kurchaninov, Marcelo Baquero-Ruiz, Andrea Gutierrez, Chukman So, Svante Jonsell, M. Charlton, Andrey Zhmoginov, S. C. Napoli, Eoin Butler, E. Sarid, Stefan Eriksson, P. J. Nolan, A. Olin, Jonathan Wurtele, D. M. Silveira, D. R. Gill, C. L. Cesar, J. S. Hangst, C. Amole, Francis Robicheaux, M. C. Fujiwara, W. N. Hardy, J. T. K. McKenna, T. Friesen, C. A. Isaac, Robert Thompson, A. Povilus
Publikováno v:
Capra, A, Amole, C, Ashkezari, M D, Baquero-Ruiz, M, Bertsche, W, Butler, E, Cesar, C L, Charlton, M, Eriksson, S, Fajans, J, Friesen, T, Fujiwara, M C, Gill, D R, Gutierrez, A, Hangst, J S, Hardy, W N, Hayden, M E, Isaac, C A, Jonsell, S, Kurchaninov, L, Little, A, McKenna, J T K, Menary, S, Napoli, S C, Nolan, P, Olchanski, K, Olin, A, Povilus, A, Pusa, P, Robicheaux, F, Sarid, E, Silveira, D M, So, C, Tharp, T D, Thompson, R I, Van der Werf, D P, Vendeiro, Z, Wurtele, J S, Zhmoginov, A I & Charman, A E 2017, ' Limit on the electric charge of antihydrogen ', Hyperfine Interactions, vol. 238, 9 . https://doi.org/10.1007/s10751-016-1382-6
The ALPHA collaboration has successfully demonstrated the production and the confinement of cold antihydrogen, $\overline{\mathrm{H}}$. An analysis of trapping data allowed a stringent limit to be placed on the electric charge of the simplest antiato
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b9a8efb8936799f19a83cffb02fefc4
http://cds.cern.ch/record/2274860
http://cds.cern.ch/record/2274860
Autor:
K. Olchanski, M. Sameed, A. Capra, Robert Thompson, E. Sarid, Alexander Khramov, A. Olin, C. J. Baker, Svante Jonsell, D. M. Starko, J. M. Jones, D. P. van der Werf, D. R. Gill, C. Carruth, R. Collister, Takamasa Momose, J. M. Michan, S. Cohen, William Bertsche, Niels Madsen, D. Maxwell, Stefan Eriksson, P. Granum, J. J. Munich, C. L. Cesar, P. Knapp, Michael E. Hayden, B. X. R. Alves, Jonathan Wurtele, R. L. Sacramento, M. Ahmadi, T. D. Tharp, G. Stutter, S. Menary, Eric Hunter, Petteri Pusa, M. C. Fujiwara, M. A. Johnson, T. Friesen, Francis Robicheaux, C. Ø. Rasmussen, Chukman So, C. A. Isaac, J. T. K. McKenna, Walter Hardy, N. Evetts, D. M. Silveira, Joel Fajans, Leonid Kurchaninov, Sandra C. Jones, M. Charlton, J. S. Hangst, A. Evans
Publikováno v:
Nature
Nature, vol 594, iss 7861
Nature, vol 594, iss 7861
At the historic Shelter Island Conference on the Foundations of Quantum Mechanics in 1947, Willis Lamb reported an unexpected feature in the fine structure of atomic hydrogen: a separation of the 2S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4c6b862169f66eeb37e5b727780d21d
Autor:
C. L. Cesar, J. Peszka, D. Maxwell, E. Sarid, Stefan Eriksson, A. Olin, K. Olchanski, William Bertsche, G. Stutter, Leonid Kurchaninov, M. Charlton, M. C. Fujiwara, M. Sameed, Eric Hunter, A. Evans, A. Capra, J. J. Munich, J. T. K. McKenna, D. Hodgkinson, P. S. Mullan, P. Granum, A. Thibeault, J. M. Jones, J. S. Hangst, J. M. Michan, Michael E. Hayden, S. Menary, A. Cridland Mathad, D. P. van der Werf, S. A. Jones, N. Evetts, Chukman So, Niels Madsen, D. R. Gill, D. M. Silveira, A. Khramov, A. Christensen, Jonathan Wurtele, Walter Hardy, P. Knapp, C. Carruth, Joel Fajans, A. Powell, T. D. Tharp, T. Friesen, C. Ø. Rasmussen, C. A. Isaac, Francis Robicheaux, Takamasa Momose, R. L. Sacramento, M. A. Johnson, R. Collister, Robert Thompson, P. Grandemange, Svante Jonsell, D. M. Starko, Petteri Pusa, C. J. Baker
Publikováno v:
Baker, C J, Bertsche, W, Capra, A, Carruth, C, Cesar, C L, Charlton, M, Christensen, A, Collister, R, Mathad, A C, Eriksson, S, Evans, A, Evetts, N, Fajans, J, Friesen, T, Fujiwara, M C, Gill, D R, Grandemange, P, Granum, P, Hangst, J S, Hardy, W N, Hayden, M E, Hodgkinson, D, Hunter, E, Isaac, C A, Johnson, M A, Jones, J M, Jones, S A, Jonsell, S, Khramov, A, Knapp, P, Kurchaninov, L, Madsen, N, Maxwell, D, McKenna, J T K, Menary, S, Michan, J M, Momose, T, Mullan, P S, Munich, J J, Olchanski, K, Olin, A, Peszka, J, Powell, A, Pusa, P, Rasmussen, C, Robicheaux, F, Sacramento, R L, Sameed, M, Sarid, E, Silveira, D M, Starko, D M, So, C, Stutter, G, Tharp, T D, Thibeault, A, Thompson, R I, van der Werf, D P & Wurtele, J S 2021, ' Laser cooling of antihydrogen atoms ', Nature, vol. 592, no. 7852, pp. 35-42 . https://doi.org/10.1038/s41586-021-03289-6
NATURE
Nature
ALPHA Collaboration 2021, ' Laser cooling of antihydrogen atoms ', Nature: international weekly journal of science, vol. 592, no. 7852, pp. 35-42 . https://doi.org/10.1038/s41586-021-03289-6
Nature, vol 592, iss 7852
NATURE
Nature
ALPHA Collaboration 2021, ' Laser cooling of antihydrogen atoms ', Nature: international weekly journal of science, vol. 592, no. 7852, pp. 35-42 . https://doi.org/10.1038/s41586-021-03289-6
Nature, vol 592, iss 7852
The photon—the quantum excitation of the electromagnetic field—is massless but carries momentum. A photon can therefore exert a force on an object upon collision1. Slowing the translational motion of atoms and ions by application of such a force2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14546feda12fa3318c43875b6ae76824
https://pure.au.dk/portal/da/publications/laser-cooling-of-antihydrogen-atoms(e9a0c501-4c41-4aa1-a297-fd90d8150d1a).html
https://pure.au.dk/portal/da/publications/laser-cooling-of-antihydrogen-atoms(e9a0c501-4c41-4aa1-a297-fd90d8150d1a).html
Autor:
Sandra C. Jones, Takamasa Momose, G. Stutter, Robert Thompson, M. C. Fujiwara, A. Khramov, Svante Jonsell, D. M. Starko, C. Carruth, C. J. Baker, J. J. Munich, R. L. Sacramento, Petteri Pusa, M. E. Hayden, P. Knapp, N. Evetts, M. A. Johnson, J. M. Jones, D. P. van der Werf, C. L. Cesar, M. Ahmadi, Francis Robicheaux, C. Ø. Rasmussen, K. Olchanski, Jonathan Wurtele, J. T. K. McKenna, Niels Madsen, T. D. Tharp, D. M. Silveira, M. Sameed, S. Cohen, Eric Hunter, A. Olin, A. Capra, D. R. Gill, S. Menary, R. Collister, William Bertsche, Chukman So, D. Maxwell, E. Sarid, Stefan Eriksson, T. Friesen, C. A. Isaac, Leonid Kurchaninov, M. Charlton, J. S. Hangst, W. N. Hardy, A. Evans, Joel Fajans, J. M. Michan, B. X. R. Alves
Publikováno v:
Nature
Nature, 2018, 561 (7722), pp.211-215. ⟨10.1038/s41586-018-0435-1⟩
Ahmadi, M, Alves, B X R, Baker, C J, Bertsche, W, Capra, A, Carruth, C, Cesar, C L, Charlton, M, Cohen, S, Collister, R, Eriksson, S, Evans, A, Evetts, N, Fajans, J, Friesen, T, Fujiwara, M C, Gill, D R, Hangst, J S, Hardy, W N, Hayden, M E, Hunter, E D, Isaac, C A, Johnson, M A, Jones, J M, Jones, S A, Jonsell, S, Khramov, A, Knapp, P, Kurchaninov, L, Madsen, N, Maxwell, D, McKenna, J T K, Menary, S, Michan, J M, Momose, T, Munich, J J, Olchanski, K, Olin, A, Pusa, P, Rasmussen, C O, Robicheaux, F, Sacramento, R L, Sameed, M, Sarid, E, Silveira, D M, Starko, D M, Stutter, G, So, C, Tharp, T D, Thompson, R I, van der Werf, D P & Wurtele, J S 2018, ' Observation of the 1S-2P Lyman-alpha transition in antihydrogen ', Nature, vol. 561, no. 7722, pp. 211-+ . https://doi.org/10.1038/s41586-018-0435-1
Nature, vol 561, iss 7722
Bertsche, W, Ahmadi, M, Alves, B X R, Baker, C J, Capra, A, Carruth, C, Cesar, C L, Charlton, M, Cohen, S, Collister, R, Eriksson, S, Evans, A, Evetts, N, Fajans, J, Friesen, T & Fujiwara, M C 2018, ' Observation of the 1S-2P Lyman-alpha transition in antihydrogen ', Nature-London-, vol. 561, no. 7722, 7722, pp. 211-215 . https://doi.org/10.1038/s41586-018-0435-1
Nature, 2018, 561 (7722), pp.211-215. ⟨10.1038/s41586-018-0435-1⟩
Ahmadi, M, Alves, B X R, Baker, C J, Bertsche, W, Capra, A, Carruth, C, Cesar, C L, Charlton, M, Cohen, S, Collister, R, Eriksson, S, Evans, A, Evetts, N, Fajans, J, Friesen, T, Fujiwara, M C, Gill, D R, Hangst, J S, Hardy, W N, Hayden, M E, Hunter, E D, Isaac, C A, Johnson, M A, Jones, J M, Jones, S A, Jonsell, S, Khramov, A, Knapp, P, Kurchaninov, L, Madsen, N, Maxwell, D, McKenna, J T K, Menary, S, Michan, J M, Momose, T, Munich, J J, Olchanski, K, Olin, A, Pusa, P, Rasmussen, C O, Robicheaux, F, Sacramento, R L, Sameed, M, Sarid, E, Silveira, D M, Starko, D M, Stutter, G, So, C, Tharp, T D, Thompson, R I, van der Werf, D P & Wurtele, J S 2018, ' Observation of the 1S-2P Lyman-alpha transition in antihydrogen ', Nature, vol. 561, no. 7722, pp. 211-+ . https://doi.org/10.1038/s41586-018-0435-1
Nature, vol 561, iss 7722
Bertsche, W, Ahmadi, M, Alves, B X R, Baker, C J, Capra, A, Carruth, C, Cesar, C L, Charlton, M, Cohen, S, Collister, R, Eriksson, S, Evans, A, Evetts, N, Fajans, J, Friesen, T & Fujiwara, M C 2018, ' Observation of the 1S-2P Lyman-alpha transition in antihydrogen ', Nature-London-, vol. 561, no. 7722, 7722, pp. 211-215 . https://doi.org/10.1038/s41586-018-0435-1
In 1906, Theodore Lyman discovered his eponymous series of transitions in the extreme-ultraviolet region of the atomic hydrogen spectrum1,2. The patterns in the hydrogen spectrum helped to establish the emerging theory of quantum mechanics, which we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1ae9435b035facc15b974fcf756610d
https://doi.org/10.1038/s41586-018-0435-1
https://doi.org/10.1038/s41586-018-0435-1