Zobrazeno 1 - 10
of 142
pro vyhledávání: '"Tan, J. N."'
Autor:
Szypryt, P., O'Neil, G. C., Takacs, E., Tan, J. N., Buechele, S. W., Naing, A. S., Bennett, D. A., Doriese, W. B., Durkin, M., Fowler, J. W., Gard, J. D., Hilton, G. C., Morgan, K. M., Reintsema, C. D., Schmidt, D. R., Swetz, D. S., Ullom, J. N., Ralchenko, Yu.
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:
http://arxiv.org/abs/2005.05483
Autor:
O'Neil, G. C., Szypryt, P., Takacs, E., Tan, J. N., Buechele, S. W., Naing, A. S., Joe, Y. I., Swetz, D., Schmidt, D. R., Doriese, W. B., Gard, J. D., Reintsema, C. D., Ullom, J. N., Villarrubia, J. S., Ralchenko, Yu.
We use narrow spectral lines from the x-ray spectra of various highlycharged ions to measure low-energy tail-like deviations from a Gaussian responsefunction in a microcalorimter x-ray spectrometer with Au absorbers at energiesfrom 650 eV to 3320 eV.
Externí odkaz:
http://arxiv.org/abs/2005.05395
Akademický článek
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Autor:
Gillaspy, J. D., Lin, T., Tedesco, L., Tan, J. N., Pomeroy, J. M., Laming, J. M., Brickhouse, N., Chen, G. -X., Silver, E.
Publikováno v:
Astrophysical Journal, 728:132 (2011)
New laboratory measurements using an Electron Beam Ion Trap (EBIT) and an x-ray microcalorimeter are presented for the n=3 to n=2 Fe XVII emission lines in the 15 {\AA} to 17 {\AA} range, along with new theoretical predictions for a variety of electr
Externí odkaz:
http://arxiv.org/abs/1106.2782
Publikováno v:
J.Phys.B 43 (2010) 074002
The nature of the theory of circular Rydberg states of hydrogenlike ions allows highly-accurate predictions to be made for energy levels. In particular, uncertainties arising from the problematic nuclear size correction which beset low angular-moment
Externí odkaz:
http://arxiv.org/abs/1003.3706
Publikováno v:
Phys.Rev.Lett. 100 (2008) 160404
Comparison of precision frequency measurements to quantum electrodynamics (QED) predictions for Rydberg states of hydrogen-like ions can yield information on values of fundamental constants and test theory. With the results of a calculation of a key
Externí odkaz:
http://arxiv.org/abs/0901.4950
Akademický článek
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Publikováno v:
J Phys B 40, 3861 (2007)
We observed spectra of highly ionized tungsten in the extreme ultraviolet with an electron beam ion trap (EBIT) and a grazing incidence spectrometer at the National Institute of Standards and Technology. Stages of ionization were distinguished by var
Externí odkaz:
http://arxiv.org/abs/0801.2817
Autor:
Ralchenko, Yu., Draganic, I. N., Tan, J. N., Gillaspy, J. D., Pomeroy, J. M., Reader, J., Feldman, U., Holland, G. E.
Publikováno v:
J Phys B 41, 021003 (2008)
We report the first measurements and detailed analysis of extreme ultraviolet (EUV) spectra (4 nm to 20 nm) of highly-charged tungsten ions W$^{54+}$ to W$^{63+}$ obtained with an electron beam ion trap (EBIT). Collisional-radiative modelling is used
Externí odkaz:
http://arxiv.org/abs/0801.2816
Autor:
Gillaspy, J. D., Blagojevic, B., Dalgarno, A., Fahey, K., Kharchenko, V., Laming, J. M., Bigot, E. -O. Le, Lugosi, L., Makonyi, K., Ratliff, L. P., Schnopper, H. W., Silver, E. H., Takacs, E., Tan, J. N., Tawara, H., Tokési, K.
Publikováno v:
14th APS Topical Conference on Atomic Processes in Plasmas, \'{E}tats-Unis d'Am\'{e}rique (2004) 245
After a brief introduction to the NIST EBIT facility, we present the results of three different types of experiments that have been carried out there recently: EUV and visible spectroscopy in support of the microelectronics industry, laboratory astro
Externí odkaz:
http://arxiv.org/abs/physics/0603131