Selective Measurements of Pion Transfer Processes in Alcohols and Carboxylic Acids Using Deuterated Compounds

Shinohara, Atsushi; Muroyama, Toshiharu; Murata, Chihiro; Miura, Taichi; Saito, Tadashi; Yokoyama, Akihiko; Kojima, Soichi; Furukawa, Mutsuhisa

doi:10.1103/physrevlett.76.2460

Cited by 8 publications

(6 citation statements)

References 23 publications

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“…The goal of the unfolding procedure is to determine a transformation for the measurement to obtain the expected values for x using relation (1). The most simple and obvious solution is the inversion of the matrix.…”

Section: Spectrum Unfoldingmentioning

confidence: 99%

“…Such exotic atoms present interesting systems for both basic and applied research, in topics ranging from quantum chemistry (e.g. pionic atom chemistry [1]), Coulomb three body systems (positronium ions [2]), muon-catalysed nuclear fusion ( [3]), QED tests (Lamb shift [4]), weak interactions (muon capture [5]), strong interactions (hadronic shifts [6]), as well as fundamental symmetry tests (anti-hydrogen, antiprotonic helium [7]).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Decay of negative muons bound inAl27

Grossheim¹,

Bayes²,

Bueno³

et al. 2009

Phys. Rev. D

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We present the first measurement of the energy spectrum up to 70 MeV of electrons from the decay of negative muons after they become bound in 27 Al atoms. The data were taken with the TWIST apparatus at TRIUMF. We find a muon lifetime of (864.6 ± 1.2) ns, in agreement with earlier measurements. The asymmetry of the decay spectrum is consistent with zero, indicating that the atomic capture has completely depolarised the muons. The measured momentum spectrum is in reasonable agreement with theoretical predictions at the higher energies, but differences around the peak of the spectrum indicate the need for O(α) radiative corrections to the calculations. The present measurement is the most precise measurement of the decay spectrum of muons bound to any nucleus.

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Section: Spectrum Unfoldingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Decay of negative muons bound inAl27

Grossheim¹,

Bayes²,

Bueno³

et al. 2009

Phys. Rev. D

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“…In our previous study, nevertheless, we observed the chemical effect on the transfer process in a pionic atom [6][7][8][9]. We investigated the pion capture ratio in the liquid mixtures of C 6 H 6 or C 6 H 12 and CCl 4 and found that the pion transfer rate for the carbon atoms of C 6 H 6 was twice as high as the rate for the carbon atoms of C 6 H 12 .…”

Section: Introductionmentioning

confidence: 96%

Muonic Atom Formation by Muon Transfer Process in C₆H₆or C₆H₁₂and CCl₄Mixtures

Inagaki¹,

Ninomiya²,

Fujihara³

et al. 2015

Proceedings of the 2nd International Symposium on Science at J-Parc — Unlocking the Mysteries of Life, Matter and the Universe

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The negative muon transfer process in the liquid mixtures of C 6 H 6 or C 6 H 12 and CCl 4 was studied to examine the chemical effect on the muon capture process through a muon transfer reaction from the muonic hydrogen atom. Muonic X-rays, which are emitted after the muon capture by carbon or chlorine atoms, were measured using high-purity germanium detectors. We found that the capture ratio of carbon atoms to chlorine atoms in a C 6 H 6 + CCl 4 system is approximately 1.5 times higher than that in a C 6 H 12 + CCl 4 system. This result can be explained by assuming that the muon transfer rate for the carbon atoms of C 6 H 6 is higher than the rate for the carbon atoms of C 6 H 12. This finding is consistent with our previous study on the pion transfer process in the same sample system, in which different pion transfer rates were obtained between C 6 H 6 and C 6 H 12 .

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“…We have investigated the pion capture process for various molecules in liquid and gas phases, focusing on the behavior of pionic hydrogen atoms [7][8][9][10]. Here, the recent results of the gas phase experiments at various gas pressures are reported.…”

Section: Introductionmentioning

confidence: 97%

“…Semi-empirical formulae for the transfer rate were also derived from the systematic measurements [2,3,5]. Recently, we successfully performed the selective measurement for hydrogen by using deuterated compounds [7] and proposed a new model involving a modified LMM model and an external transfer process [8]. This method will provide useful information on the individual behavior of pionic hydrogen atoms from different sites in a molecule or material.…”

Section: Introductionmentioning

confidence: 99%

Pion transfer processes of pionic atoms in the gas mixtures containing hydrogen at various pressures

Shinohara¹,

Miura²,

Yokoyama³

et al. 2001

Radiochimica Acta

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Negative pion capture / Pionic X rays / Pion transfer process / Pionic atoms / Pionic hydrogen / Gas phaseSummary. The pion capture process in gas mixtures containing hydrogen was studied by measuring pionic X rays and π 0 decays. A little difference in pion transfer process was found between the H 2 + D 2 and H 2 O + D 2 O systems. Pressure-dependence of the transfer rates was also revealed in the CH 4 + Ar system by the measurements at several gas pressures. The mechanism of the pion transfer process was discussed based on a comparison between transfer parameters in the gas and liquid phases.

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Selective Measurements of Pion Transfer Processes in Alcohols and Carboxylic Acids Using Deuterated Compounds

Cited by 8 publications

References 23 publications

Decay of negative muons bound inAl27

Decay of negative muons bound inAl27

Muonic Atom Formation by Muon Transfer Process in C₆H₆or C₆H₁₂and CCl₄Mixtures

Pion transfer processes of pionic atoms in the gas mixtures containing hydrogen at various pressures

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Selective Measurements of Pion Transfer Processes in Alcohols and Carboxylic Acids Using Deuterated Compounds

Cited by 8 publications

References 23 publications

Decay of negative muons bound inAl27

Decay of negative muons bound inAl27

Muonic Atom Formation by Muon Transfer Process in C6H6or C6H12and CCl4Mixtures

Pion transfer processes of pionic atoms in the gas mixtures containing hydrogen at various pressures

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Product

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Muonic Atom Formation by Muon Transfer Process in C₆H₆or C₆H₁₂and CCl₄Mixtures