Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Joseph N, Tan"'
Autor:
Yang Yang, Dipti, Amy Gall, Galen O’Neil, Paul Szypryt, Adam Hosier, Adam Foster, Aung Naing, Joseph N. Tan, David R. Schultz, Randall Smith, Nancy Brickhouse, Yuri Ralchenko, Endre Takacs
Publikováno v:
Atoms, Vol 11, Iss 3, p 44 (2023)
In an effort to measure electron-impact ionization (EII) cross-sections of He-like Fe24+ at the electron beam ion trap (EBIT) facility of the National Institute of Standards and Technology (NIST), we have experimentally determined the corrections to
Externí odkaz:
https://doaj.org/article/1c7f917e5bba4b5fbb2cdb9d9e7a2ad7
Autor:
Endre Takacs, Dipti, David S. La Mantia, Yang Yang, Adam Hosier, Aung Naing, Paul Szypryt, Hunter Staiger, Joseph N. Tan, Yuri Ralchenko
Publikováno v:
Atoms, Vol 11, Iss 3, p 43 (2023)
We report measurements and identification of the E3 4f7/2,5/2-5s1/2 transitions and E1 allowed transitions in Ag-like W (Z = 74), Re (Z = 75), and Ir (Z = 77). The spectra were recorded at the NIST EBIT using a grazing-incidence EUV spectrometer. The
Externí odkaz:
https://doaj.org/article/aa2222965de548e59f856c45fd811724
Autor:
Adam Hosier, Dipti, Yang Yang, Paul Szypryt, Grant P. Mondeel, Aung Naing, Joseph N. Tan, Roshani Silwal, Galen O’Neil, Alain Lapierre, Steven A. Blundell, John D. Gillaspy, Gerald Gwinner, Antonio C. C. Villari, Yuri Ralchenko, Endre Takacs
Publikováno v:
Atoms, Vol 11, Iss 3, p 48 (2023)
Extreme ultraviolet spectra of Na-like and Mg-like Os and Ir were recorded at the National Institute of Standards and Technology using a grazing incidence spectrometer. We report a method in EBIT spectral analysis that reduces signals from contaminan
Externí odkaz:
https://doaj.org/article/8f04500755b04b9c869d957b34cf464d
Autor:
Shannon Fogwell Hoogerheide, Aung S. Naing, Joan M. Dreiling, Samuel M. Brewer, Nicholas D. Guise, Joseph N. Tan
Publikováno v:
Atoms, Vol 3, Iss 3, Pp 367-391 (2015)
Highly-ionized atoms with special properties have been proposed for interesting applications, including potential candidates for a new generation of optical atomic clocks at the one part in 1019 level of precision, quantum information processing and
Externí odkaz:
https://doaj.org/article/ab40f094f98f49c2820b52b16ead3af5
Autor:
S. W. Buechele, Young Il Joe, Carl D. Reintsema, Galen C. O'Neil, Yu. Ralchenko, Joel N. Ullom, Joseph N. Tan, Daniel Schmidt, J. D. Gard, J. S. Villarrubia, Daniel S. Swetz, Aung Naing, William B. Doriese, Endre Takacs, Paul Szypryt
Publikováno v:
Journal of Low Temperature Physics. 199:1046-1054
We use narrow spectral lines from the X-ray spectra of various highly charged ions to measure low-energy tail-like deviations from a Gaussian response function in a microcalorimeter X-ray spectrometer with Au absorbers at energies from 650 to 3320 eV
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::064782bad726326071b6bd0e0516bb32
https://doi.org/10.1007/s10909-019-02270-y
https://doi.org/10.1007/s10909-019-02270-y
Autor:
Amy Gall, Randy Doriese, Endre Takacs, Paul Szypryt, Joseph W. Fowler, Andrey V. Volotka, Daniel S. Swetz, Galen C. O'Neil, S. Sanders, Yang Yang, Joel N. Ullom, Dipti, Samuel M. Brewer, Yuri Ralchenko, Joseph N. Tan, Aung Naing
Publikováno v:
Physical Review A. 102
Quantum electrodynamics (QED) is currently considered to be one of the most accurate theories of fundamental interactions. As its extraordinary precision offers unique scientific opportunities, e.g., search for new physics, stringent experimental tes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f92c2dc94671fb4ce902c2b92c9c843
https://doi.org/10.1103/physreva.102.032803
https://doi.org/10.1103/physreva.102.032803
Autor:
Aung Naing, Galen C. O'Neil, Joseph N. Tan, D. R. Schmidt, Douglas A. Bennett, Paul Szypryt, Kelsey M. Morgan, Malcolm Durkin, Carl D. Reintsema, Daniel S. Swetz, William B. Doriese, S. W. Buechele, Gene C. Hilton, Yu. Ralchenko, Joseph W. Fowler, Endre Takacs, Joel N. Ullom, Johnathon D. Gard
Publikováno v:
Rev Sci Instrum
We report on the design, commissioning, and initial measurements of a Transition-edge Sensor (TES) x-ray spectrometer for the Electron Beam Ion Trap (EBIT) at the National Institute of Standards and Technology (NIST). Over the past few decades, the N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::705e63255941e823e6b07b9b22969e64
http://arxiv.org/abs/2005.05483
http://arxiv.org/abs/2005.05483
Autor:
Amy Gall, Y Yang, Yu. Ralchenko, Endre Takacs, Aung Naing, C Suzuki, Roshani Silwal, Dipti, Samuel N. Sanders, Joseph N. Tan
Publikováno v:
C Suzuki et al 2020 J. Phys. B: At. Mol. Opt. Phys. 54 015001
Accurate extreme ultraviolet spectra of open N-shell neodymium (Nd) ions were recorded at the electron beam ion trap facility of the National Institute of Standards and Technology. The measurements were performed for nominal electron beam energies in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43c0636438144a61337e21591b5b98ac
https://doi.org/10.1088/1361-6455/abc9cd
https://doi.org/10.1088/1361-6455/abc9cd
Autor:
Joan Dreiling, Shannon Fogwell Hoogerheide, Samuel M. Brewer, Nicholas D. Guise, Aung Naing, Joseph N. Tan
Publikováno v:
Physical Review A. 98
Multiply ionized atoms of a single charge state can be captured at low energy in a compact Penning trap, allowing the measurement of the radiative lifetime of an atomic state that decays via weakly allowed transitions. Such a measurement is reported
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62c1d2dc7fd10dc9865cc753afec7199
https://doi.org/10.1103/physreva.98.032501
https://doi.org/10.1103/physreva.98.032501
Autor:
Samuel M. Brewer, Shannon Fogwell Hoogerheide, Joseph N. Tan, Joan Dreiling, Aung Naing, J. M. Hanson
Publikováno v:
Journal of Applied Physics. 126:024501
The confinement of ions in a radio-frequency (RF) trap (also known as a Paul trap) has proven to be advantageous in many applications. In nearly all cases, singly- or few-times-ionized atoms are created in situ within the RF trap. Highly charged ions
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bec169387bc0d3d8ccd4b1e8e837390
https://doi.org/10.1063/1.5090338
https://doi.org/10.1063/1.5090338