Kaonic Atom Experiments at J-PARC

Hashimoto, T.; Aikawa, S.; Ajimura, S.; Akaishi, Takao; Asano, H.; Bazzi, M.; Beer, G.; Bennett, Douglas A.; Berucci, C.; Bosnar, D.; Bragadireanu, M.; Bhler, P.; Busso, L.; Butt, Arslan Dawood; Cargnelli, M.; Choi, Seonho; Curceanu, C.; Doriese, W. B.; Durkin, Malcolm; Enomoto, S.; Ezoe, Yuichiro; Fowler, J. W.; Fujioka, Hiroyuki; Fukuda, T.; Guaraldo, C.; Gustafsson, F. P.; Han, C.; Hayakawa, Ritsuko; Hayano, R. S.; Hayashi, Takayuki; Hays-Wehle, J. P.; Hilton, G. C.; Hiraiwa, T.; Ichinohe, Yuto; M, Iio; Yutaro, Iizawa,; Iliescu, M.; Inoue, Kentaro; Ishimoto, S.; Ishisaki, Yoshitaka; Itahashi, K.; Iwasaki, M.; Kawasaki, Shingo; Ma, Yue; Márton, J.; Matsuda, Y.; Mizoi, Y.; Morra, O.; Murakami, Tomoki; Nagae, T.; Nishi, Takahiro; Noda, Hirofumi; Noumi, H.; Nunomura, K.; O’Neil, Galen C.; Ohashi, T.; Ohnìshì, H.; Okada, S.; Outa, H.; Piscicchia, K.; Reintsema, C. D.; Sada, Y.; Sakaguchi, A.; Sakuma, F.; Sato, Masaharu; Schmidt, D. R.; Scordo, A.; Sekimoto, M.; Shi, H.; Shirotori, K.; Sirghi, D.; Sirghi, F.; Suzuki, K.; Suzuki, S.; Suzuki, T.; Swetz, Daniel S.; Takamine, A.; Tanida, K.; Tatsuno, H.; Tomono, D.; Toyoda, A.; Trippl, C.; Tsukada, K.; Uhlig, Jens; Ullom, Joel N.; Doce, O. Vázquez; Widmann, E.; Yamada, S.; Yamaga, T.; Yamazaki, T.; Zmeskal, J.

doi:10.7566/jpscp.26.023013

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…Highly charged ions provide stringent tests of atomic theory and quantum electrodynamics (QED) [25,26]. Exotic atoms-in which an unstable particle such as a pion [27][28][29], kaon [30,31], muon [32], or antiproton [33] replaces an electron-probe both QED and the nuclear theory of quantum chromodynamics (QCD). Measurements of ionized or exotic atoms require instruments with excellent calibration, typically achieved through the use of x-ray lines of known energy.…”

Section: Introductionmentioning

confidence: 99%

Absolute energies and emission line shapes of the L x-ray transitions of lanthanide metals

et al. 2021

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We use an array of transition-edge sensors, cryogenic microcalorimeters with 4 eV energy resolution, to measure L x-ray emission-line profiles of four elements of the lanthanide series: praseodymium, neodymium, terbium, and holmium. The spectrometer also surveys numerous x-ray standards in order to establish an absolute-energy calibration traceable to the international system of units for the energy range 4 keV to 10 keV. The new results include emission line profiles for 97 lines, each expressed as a sum of one or more Voigt functions; improved absolute energy uncertainty on 71 of these lines relative to existing reference data; a median uncertainty on the peak energy of 0.24 eV, four to ten times better than the median of prior work; and six lines that lack any measured values in existing reference tables. The 97 lines comprise nearly all of the most intense L lines from these elements under broad-band x-ray excitation. The work improves on previous measurements made with a similar cryogenic spectrometer by the use of sensors with better linearity in the absorbed energy and a gold x-ray absorbing layer that has a Gaussian energy-response function. It also employs a novel sample holder that enables rapid switching between science targets and calibration targets with excellent gain balancing. Most of the results for peak energy values shown here should be considered as replacements for the currently tabulated standard reference values, while the line shapes given here represent a significant expansion of the scope of available reference data.

show abstract

Section: Introductionmentioning

confidence: 99%

Absolute energies and emission line shapes of the L x-ray transitions of lanthanide metals

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Highly charged ions provide stringent tests of atomic theory and quantum electrodynamics (QED) [25,26]. Exotic atoms-in which an unstable particle such as a pion [27,28,29], kaon [30,31], muon [32], or antiproton [33] replaces an electronprobe both QED and the nuclear theory of quantum chromodynamics (QCD). Measurements of ionized or exotic atoms require instruments with excellent calibration, typically achieved through the use of x-ray lines of known energy.…”

Section: Introductionmentioning

confidence: 99%

Absolute energies and emission line shapes of the L x-ray transitions of lanthanide metals

Fowler,

O'Neil,

Alpert

et al. 2020

Preprint

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We use an array of transition-edge sensors, cryogenic microcalorimeters with 4 eV energy resolution, to measure L x-ray emission-line profiles of four elements of the lanthanide series: praseodymium, neodymium, terbium, and holmium. The spectrometer also surveys numerous x-ray standards in order to establish an absolute-energy calibration traceable to the International System of Units for the energy range 4 keV to 10 keV. The new results include emission line profiles for 97 lines, each expressed as a sum of one or more Voigt functions; improved absolute energy uncertainty on 71 of these lines relative to existing reference data; a median uncertainty on the peak energy of 0.24 eV, four to ten times better than the median of prior work; and 6 lines that lack any measured values in existing reference tables. The 97 lines comprise nearly all of the most intense L lines from these elements under broad-band x-ray excitation. The work improves on previous measurements made with a similar cryogenic spectrometer by the use of sensors with better linearity in the absorbed energy and a gold x-ray absorbing layer that has a Gaussian energy-response function. It also employs a novel sample holder that enables rapid switching between science targets and calibration targets with excellent gain balancing. Most of the results for peak energy values shown here should be considered as replacements for the currently tabulated standard reference values, while the line shapes given here represent a significant expansion of the scope of available reference data.

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Cross-Channel Constraints on Resonant Antikaon-Nucleon Scattering

Geng

Döring

et al. 2023

Phys. Rev. Lett.

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Kaonic Atom Experiments at J-PARC

Cited by 3 publications

References 8 publications

Absolute energies and emission line shapes of the L x-ray transitions of lanthanide metals

Absolute energies and emission line shapes of the L x-ray transitions of lanthanide metals

Absolute energies and emission line shapes of the L x-ray transitions of lanthanide metals

Cross-Channel Constraints on Resonant Antikaon-Nucleon Scattering

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