− atomic X-ray spectroscopy using a counter-emulsion hybrid method

M. Fujita; H. Ekawa; Y. Endo; R. Goto; S. Hasegawa; S. H. Hayakawa; K. Hayashi; R. Honda; K. Hoshino; K. Hosomi; M. Ichikawa; Y. Ichikawa; H. Ito; Y. Ishikawa; W. S. Jung; A. Kasagi; S. H. Kim; S. Kinbara; H. Kobayashi; T. Koike; J. Y. Lee; P. M. Lin; Y. Nagase; D. Nakashima; K. Nakazawa; T. Nanamura; N. Nishimura; S. Nishimura; A. N.L. Nyaw; M. Ohashi; H. Sako; M. K. Soe; H. Tamura; A. M.M. Theint; K. T. Tint; Y. Toyama; M. Ukai; T. O. Yamamoto; S. B. Yang; J. Yoshida; M. Yoshimoto; D. Zhang

doi:10.1093/ptep/ptac156

⁻ atomic X-ray spectroscopy using a counter-emulsion hybrid method

M. Fujita, H. Ekawa, Y. Endo, R. Goto, S. Hasegawa, S. H. Hayakawa, K. Hayashi, R. Honda, K. Hoshino, K. Hosomi, M. Ichikawa, Y. Ichikawa, H. Ito, Y. Ishikawa, W. S. Jung, A. Kasagi, S. H. Kim, S. Kinbara, H. Kobayashi, T. KoikeJ. Y. Lee, P. M. Lin, Y. Nagase, D. Nakashima, K. Nakazawa, T. Nanamura, N. Nishimura, S. Nishimura, A. N.L. Nyaw, M. Ohashi, H. Sako, M. K. Soe, H. Tamura, A. M.M. Theint, K. T. Tint, Y. Toyama, M. Ukai, T. O. Yamamoto, S. B. Yang, J. Yoshida, M. Yoshimoto, D. Zhang

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

⁻ atomic X-ray spectroscopy is one of the most useful methods for investigation of the –nucleus strong interaction. Since the X-ray energy is shifted and/or broadened due to the –nucleus strong interaction compared to those calculated from electromagnetic interaction alone, the measurement of the energy shift, ΔE, and the width, Γ, give us information on the –nucleus potential. A serious problem in the measurement is the significant background derived from in-flight ⁻ decay. A novel method of identifying stopped ⁻ events using the nuclear emulsion was developed to realize the first ⁻ atomic X-ray spectroscopy experiment as the J-PARC E07 experiment, which also aimed at searching for ΛΛ and ⁻ hypernuclei in the emulsion. The X-rays emitted from ⁻ Br and ⁻ Ag atoms were measured using germanium detectors. No clear peaks were observed in the obtained spectra. However, we succeeded in reducing the background to 1/170 by this method employing coincidence measurements using nuclear emulsion and X-ray detectors.

Original language	English
Article number	123D01
Journal	Progress of Theoretical and Experimental Physics
Volume	2022
Issue number	12
DOIs	https://doi.org/10.1093/ptep/ptac156
State	Published - 1 Dec 2022

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D01

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10.1093/ptep/ptac156

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Fujita, M., Ekawa, H., Endo, Y., Goto, R., Hasegawa, S., Hayakawa, S. H., Hayashi, K., Honda, R., Hoshino, K., Hosomi, K., Ichikawa, M., Ichikawa, Y., Ito, H., Ishikawa, Y., Jung, W. S., Kasagi, A., Kim, S. H., Kinbara, S., Kobayashi, H., ... Zhang, D. (2022). ⁻ atomic X-ray spectroscopy using a counter-emulsion hybrid method. Progress of Theoretical and Experimental Physics, 2022(12), Article 123D01. https://doi.org/10.1093/ptep/ptac156

@article{f75e3171b13f43bbb1201cf8ff85876b,

title = "− atomic X-ray spectroscopy using a counter-emulsion hybrid method",

abstract = "− atomic X-ray spectroscopy is one of the most useful methods for investigation of the –nucleus strong interaction. Since the X-ray energy is shifted and/or broadened due to the –nucleus strong interaction compared to those calculated from electromagnetic interaction alone, the measurement of the energy shift, ΔE, and the width, Γ, give us information on the –nucleus potential. A serious problem in the measurement is the significant background derived from in-flight − decay. A novel method of identifying stopped − events using the nuclear emulsion was developed to realize the first − atomic X-ray spectroscopy experiment as the J-PARC E07 experiment, which also aimed at searching for ΛΛ and − hypernuclei in the emulsion. The X-rays emitted from − Br and − Ag atoms were measured using germanium detectors. No clear peaks were observed in the obtained spectra. However, we succeeded in reducing the background to 1/170 by this method employing coincidence measurements using nuclear emulsion and X-ray detectors.",

keywords = "D01",

author = "M. Fujita and H. Ekawa and Y. Endo and R. Goto and S. Hasegawa and Hayakawa, {S. H.} and K. Hayashi and R. Honda and K. Hoshino and K. Hosomi and M. Ichikawa and Y. Ichikawa and H. Ito and Y. Ishikawa and Jung, {W. S.} and A. Kasagi and Kim, {S. H.} and S. Kinbara and H. Kobayashi and T. Koike and Lee, {J. Y.} and Lin, {P. M.} and Y. Nagase and D. Nakashima and K. Nakazawa and T. Nanamura and N. Nishimura and S. Nishimura and Nyaw, {A. N.L.} and M. Ohashi and H. Sako and Soe, {M. K.} and H. Tamura and Theint, {A. M.M.} and Tint, {K. T.} and Y. Toyama and M. Ukai and Yamamoto, {T. O.} and Yang, {S. B.} and J. Yoshida and M. Yoshimoto and D. Zhang",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2022. Published by Oxford University Press on behalf of the Physical Society of Japan.",

year = "2022",

month = dec,

day = "1",

doi = "10.1093/ptep/ptac156",

language = "English",

volume = "2022",

journal = "Progress of Theoretical and Experimental Physics",

issn = "2050-3911",

publisher = "Oxford University Press",

number = "12",

}

Fujita, M, Ekawa, H, Endo, Y, Goto, R, Hasegawa, S, Hayakawa, SH, Hayashi, K, Honda, R, Hoshino, K, Hosomi, K, Ichikawa, M, Ichikawa, Y, Ito, H, Ishikawa, Y, Jung, WS, Kasagi, A, Kim, SH, Kinbara, S, Kobayashi, H, Koike, T, Lee, JY, Lin, PM, Nagase, Y, Nakashima, D, Nakazawa, K, Nanamura, T, Nishimura, N, Nishimura, S, Nyaw, ANL, Ohashi, M, Sako, H, Soe, MK, Tamura, H, Theint, AMM, Tint, KT, Toyama, Y, Ukai, M, Yamamoto, TO, Yang, SB, Yoshida, J, Yoshimoto, M & Zhang, D 2022, '⁻ atomic X-ray spectroscopy using a counter-emulsion hybrid method', Progress of Theoretical and Experimental Physics, vol. 2022, no. 12, 123D01. https://doi.org/10.1093/ptep/ptac156

TY - JOUR

T1 - − atomic X-ray spectroscopy using a counter-emulsion hybrid method

AU - Fujita, M.

AU - Ekawa, H.

AU - Endo, Y.

AU - Goto, R.

AU - Hasegawa, S.

AU - Hayakawa, S. H.

AU - Hayashi, K.

AU - Honda, R.

AU - Hoshino, K.

AU - Hosomi, K.

AU - Ichikawa, M.

AU - Ichikawa, Y.

AU - Ito, H.

AU - Ishikawa, Y.

AU - Jung, W. S.

AU - Kasagi, A.

AU - Kim, S. H.

AU - Kinbara, S.

AU - Kobayashi, H.

AU - Koike, T.

AU - Lee, J. Y.

AU - Lin, P. M.

AU - Nagase, Y.

AU - Nakashima, D.

AU - Nakazawa, K.

AU - Nanamura, T.

AU - Nishimura, N.

AU - Nishimura, S.

AU - Nyaw, A. N.L.

AU - Ohashi, M.

AU - Sako, H.

AU - Soe, M. K.

AU - Tamura, H.

AU - Theint, A. M.M.

AU - Tint, K. T.

AU - Toyama, Y.

AU - Ukai, M.

AU - Yamamoto, T. O.

AU - Yang, S. B.

AU - Yoshida, J.

AU - Yoshimoto, M.

AU - Zhang, D.

PY - 2022/12/1

Y1 - 2022/12/1

N2 - − atomic X-ray spectroscopy is one of the most useful methods for investigation of the –nucleus strong interaction. Since the X-ray energy is shifted and/or broadened due to the –nucleus strong interaction compared to those calculated from electromagnetic interaction alone, the measurement of the energy shift, ΔE, and the width, Γ, give us information on the –nucleus potential. A serious problem in the measurement is the significant background derived from in-flight − decay. A novel method of identifying stopped − events using the nuclear emulsion was developed to realize the first − atomic X-ray spectroscopy experiment as the J-PARC E07 experiment, which also aimed at searching for ΛΛ and − hypernuclei in the emulsion. The X-rays emitted from − Br and − Ag atoms were measured using germanium detectors. No clear peaks were observed in the obtained spectra. However, we succeeded in reducing the background to 1/170 by this method employing coincidence measurements using nuclear emulsion and X-ray detectors.

AB - − atomic X-ray spectroscopy is one of the most useful methods for investigation of the –nucleus strong interaction. Since the X-ray energy is shifted and/or broadened due to the –nucleus strong interaction compared to those calculated from electromagnetic interaction alone, the measurement of the energy shift, ΔE, and the width, Γ, give us information on the –nucleus potential. A serious problem in the measurement is the significant background derived from in-flight − decay. A novel method of identifying stopped − events using the nuclear emulsion was developed to realize the first − atomic X-ray spectroscopy experiment as the J-PARC E07 experiment, which also aimed at searching for ΛΛ and − hypernuclei in the emulsion. The X-rays emitted from − Br and − Ag atoms were measured using germanium detectors. No clear peaks were observed in the obtained spectra. However, we succeeded in reducing the background to 1/170 by this method employing coincidence measurements using nuclear emulsion and X-ray detectors.

KW - D01

UR - http://www.scopus.com/inward/record.url?scp=85160398532&partnerID=8YFLogxK

U2 - 10.1093/ptep/ptac156

DO - 10.1093/ptep/ptac156

M3 - Article

AN - SCOPUS:85160398532

SN - 2050-3911

VL - 2022

JO - Progress of Theoretical and Experimental Physics

JF - Progress of Theoretical and Experimental Physics

IS - 12

M1 - 123D01

ER -

⁻ atomic X-ray spectroscopy using a counter-emulsion hybrid method

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