Transportation of Ultra Slow Muon on U-line, MLF, J-PARC

Pant, Amba Datt; Adachi, T.; Ikedo, Yutaka; Oishi, Yuji; Nakamura, Jumpei; Strasser, P.; Kojima, Kenji; Makimura, Shunsuke; Kawamura, N.; Koda, Akihide; Ito, Takashi U.; Higemoto, Wataru; Shimomura, Koichiro; Kadono, R.; Miyake, Yasuhiro; Torikai, E.

doi:10.7566/jpscp.21.011060

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…However, HOMO-LUMO gap indicates the easy electronic transition occurred when Mu stops around O2. The behavior of muonium will be studied via SR studies and compared with current result using ultra slow muon microscopy under development in Japan Proton Accelerator Research Complex, Japan [15][16][17][18].…”

Section: Discussionmentioning

confidence: 99%

Muonium behavior in N-acetylglycine-N-methylamide

Pant

2021

BIBECHANA

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In muon spin rotation and relaxation (mSR) method, theoretical work using first-principles calculations helps to understand the stopping sites and charge states of muon in the sample materials. To support the mSR measurement on protein and DNA, a systematic first-principles study starting from the constituents of the protein has been performed. In this work, the behavior of muonium (Mu = m+e-, bound state of a muon and an electron which is like a light isotope of H atom with similar chemical properties) in a N-acetylglycine-N-methylamide (AGMA), a part of peptide bond, is presented. It is found that the stopping site of Mu is around O of unsaturated bonds between C and O in the AGMA. Further calculations towards whole protein and DNA will be performed to support mSR studies. BIBECHANA 18 (2) (2021) 138-142

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Section: Discussionmentioning

confidence: 99%

Muonium behavior in N-acetylglycine-N-methylamide

Pant

2021

BIBECHANA

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“…Further study of addition of more water molecules as in experimental sample will help to understand the measured result. Since the limitation of conventional muon to apply in single crystal of protein, we have been developing the ultra-slow muon microscopy at materials and life science facility, Japan Proton Accelerator Research Complex (J-PARC) [16][17][18][19].…”

Section: Stopping Sites Potential Energy (Ev)mentioning

confidence: 99%

Muonium and Water in Histidine Amino Acid

Pant¹

2021

J. Nep. Phys. Soc.

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In order to apply muon spin rotation and relaxation method for study of life sciences like electron transfer process, detection of molecular concentration, photosynthesis process, etc., theoretical study to understand the stopping sites of muon and its charge species in the macromolecules is necessary. In the systematic theoretical study to know the behaviour of muon and muonium in water hydrated biological macromolecules like protein and DNA through the first-principles approach, the behaviour of a water molecule in the presence of muonium in histidine amino acid with extended main chain is presented here. The sites of a water molecule and a muonium in histidine amino acid are estimated. Two possible sites with potential energy 0.3 eV (approximately) for water molecule in the optimized structure of muonium in extended main chain histidine were estimated. Water in the sites is expected to contribute to enhance the intra- and inter-chain electron transfer in the system as reported experimentally.

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“…Using pulsed muon beam in J-PARC, the development of ultra slow muon beamline which is dedicated to slow muon microscopy is still in progress [33,34]. The slow muons are successfully generated and transported to sample position [36]. Now we are struggling to enhance the intensity and optimize the beam parameters.…”

Section: Need and Development Of Slow Muon Beammentioning

confidence: 99%

Conventional to slow muon microscopy – a review

Pant¹

2020

BIBECHANA

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Because of special characteristics (fully spin polarized and asymmetric decay to positron), muon acts as sensitive probe to study the local electronic and dynamics of materials. The muon of energy MeV or high, conventional muon, are used to study bulk properties of the materials. For the study of nanoscience, slow muon (20 eV - 30 keV) muon with low energy spread are essential that leads to development of slow muon microscopy. Introduction to muon microscopy, application of conventional muons and need of slow muon beam along with future prospects are briefly discussed. BIBECHANA 17 (2020) 139-145

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Transportation of Ultra Slow Muon on U-line, MLF, J-PARC

Cited by 6 publications

References 8 publications

Muonium behavior in N-acetylglycine-N-methylamide

Muonium behavior in N-acetylglycine-N-methylamide

Muonium and Water in Histidine Amino Acid

Conventional to slow muon microscopy – a review

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