Zobrazeno 1 - 10
of 350
pro vyhledávání: '"O'Neil, G."'
Autor:
Okumura, T., Azuma, T., Bennett, D. A., Doriese, W. B., Durkin, M. S., Fowler, J. W., Gard, J. D., Hashimoto, T., Hayakawa, R., Ichinohe, Y., Indelicato, P., Isobe, T., Kanda, S., Kato, D., Katsuragawa, M., Kawamura, N., Kino, Y., Kominato, N., Miyake, Y., Morgan, K. M., Noda, H., O'Neil, G. C., Okada, S., Okutsu, K., Paul, N., Reintsema, C. D., Sato, T., Schmidt, D. R., Shimomura, K., Strasser, P., Swetz, D. S., Takahashi, T., Takeda, S., Takeshita, S., Tampo, M., Tatsuno, H., Tőkési, K., Tong, X. M., Toyama, Y., Ullom, J. N., Watanabe, S., Yamada, S., Yamashita, T.
Electronic $K$ x rays emitted by muonic Ar atoms in the gas phase were observed using a superconducting transition-edge-sensor microcalorimeter. The high-precision energy spectra provided a clear signature of the presence of muonic atoms accompanied
Externí odkaz:
http://arxiv.org/abs/2407.07977
Publikováno v:
Radiation Physics and Chemistry 202 (2023), 110487
We have previously used an array of cryogenic microcalorimeters with 4 eV energy resolution to measure emission-line profiles and energies of the characteristic L-shell x rays of four elements of the lanthanide series: praseodymium, neodymium, terbiu
Externí odkaz:
http://arxiv.org/abs/2208.07795
Publikováno v:
J. Low Temperature Physics 2022
The nonlinear energy response of cryogenic microcalorimeters is usually corrected through an empirical calibration. X-ray or gamma-ray emission lines of known shape and energy anchor a smooth function that generalizes the calibration data and convert
Externí odkaz:
http://arxiv.org/abs/2204.08431
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
A principal component analysis (PCA) of clean microcalorimeter pulse records can be a first step beyond statistically optimal linear filtering of pulses towards a fully non-linear analysis. For PCA to be practical on spectrometers with hundreds of se
Externí odkaz:
http://arxiv.org/abs/1911.00423
Autor:
Tatsuno, H., Bennett, D. A., Doriese, W. B., Durkin, M., Fowler, J. W., Gard, J. D., Hashimoto, T., Hayakawa, R., Hayashi, T., Hilton, G. C., Ichinohe, Y., Noda, H., O'Neil, G. C., Okada, S., Reintsema, C. D., Schmidt, D. R., Swetz, D. S., Ullom, J. N., Yamada, S.
Exotic atom experiments place transition-edge-sensor (TES) microcalorimeter arrays in a high-energy charged particle rich environment. When a high-energy charged particle passes through the silicon substrate of a TES array, a large amount of energy i
Externí odkaz:
http://arxiv.org/abs/1907.06262
Autor:
Pappas, C. G., Fowler, J. W., Bennett, D. A., Doriese, W. B., Joe, Y. I., Morgan, K. M., O'Neil, G. C., Ullom, J. N., Swetz, D. S.
Publikováno v:
Pappas, C.G., Fowler, J.W., Bennett, D.A. et al. J Low Temp Phys (2018)
Transition-edge sensor X-ray microcalorimeters are usually calibrated empirically, as the most widely-used calibration metric, optimal filtered pulse height (OFPH), in general has an unknown dependance on photon energy, $E_{\gamma}$. Because the cali
Externí odkaz:
http://arxiv.org/abs/1808.00623
Autor:
Fowler, J. W., Pappas, C. G., Alpert, B. K., Doriese, W. B., O'Neil, G. C., Ullom, J. N., Swetz, D. S.
We consider how to analyze microcalorimeter pulses for quantities that are nonlinear in the data, while preserving the signal-to-noise advantages of lin- ear optimal filtering. We successfully apply our chosen approach to compute the electrothermal f
Externí odkaz:
http://arxiv.org/abs/1803.02827
Autor:
Fowler, J. W., Alpert, B. K., Bennett, D. A., Doriese, W. B., Gard, J. D., Hilton, G. C., Hudson, L. T., Joe, Y. -I., Morgan, K. M., O'Neil, G. C., Reintsema, C. D., Schmidt, D. R., Swetz, D. S., Szabo, C. I., Ullom., J. N.
Publikováno v:
Metrologia 54 (2017) 494
We introduce a new technique for determining x-ray fluorescence line energies and widths, and we present measurements made with this technique of 22 x-ray L lines from lanthanide-series elements. The technique uses arrays of transition-edge sensors,
Externí odkaz:
http://arxiv.org/abs/1702.00507