Positive Muons and Muonium in Matter

Brewer, J.H.; Crowe, K. M.; Gygax, F. N.; Schenck, A.

doi:10.1016/b978-0-12-360603-7.50007-0

Cited by 58 publications

(65 citation statements)

References 61 publications

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“…[2] and the liquid employed as a solvent in the study of reaction rate constants of solutes. The example of phenol in n-hexane is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, h is interpreted as a chemical rate constant (k,) in the presence of a reactive solute at concentration [S] by application of eq. [2], where A, is the relaxation rate constant observed in the neat solvent (4,7).…”

Section: Methodsmentioning

confidence: 99%

“…Muonium is studied by the muon and muonium spin rotation methods (pSR and MSR) which have been described in detail elsewhere (2,7,9). Longitudinally spin-polarized muons from pion decays are made to impinge on a chemical sample where they come to rest and become incorporated in several different possible chemical states: either in diamagnetic states, or as free Mu atoms, or in free radicals (10).…”

Section: Methodsmentioning

confidence: 99%

“…Although studied for more than a decade in gases and solids (2), only recently was the same IOn leave from: Research Center for Nuclear Science and Engineering, University of Tokyo, Tokyo, Japan. 2Present address: Physics Department, University of Missouri, Kansas City, MO.…”

Section: Introductionmentioning

confidence: 99%

“…four points of view (2,7). First, there is interest in the intrinsic properties and mode of formation of this unusual chemical species.…”

Section: Introductionmentioning

confidence: 99%

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Muonium atoms observed in liquid hydrocarbons

Ito¹,

Ng²,

Jean³

et al. 1980

Can. J. Chem.

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. 58,2395 (1980). Muonium atoms have been observed in n-hexane, c-hexane, and tetramethylsilane at 295 or 273 K by the MSR technique. The yield of muonium in these non-polar liquids is found to be quite comparable to that observed previously in water, methanol, and ethanol. This suggests that neither the dielectric constant of the medium nor the free-electron mobility has a major influence on the formation process. This in turn supports the view that muonium formation does not mainly result from intraspur reactions in the terminal spur of the muon's track.The chemical lifetime of muonium in these hydrocarbons is curtailed by spurious impurities so that high purity is required. In addition, however, there may be a chemical reaction between muonium and the hydrocarbon itself because the maximum lifetime I found increases in the order of increasing bond energy. Reaction rate constants with added solutes have also been measured, and these observations open up the possibility of studying hydrophobic solutes and extending hydrogen-isotope studies to biologically-important media. Chem. 58,2395Chem. 58, (1980. On a observe des atomes de muonium dans le n-hexane, le c-hexane et dans le tetramethylsilane a 295 ou 273 K par la technique de RSM. On a trouve que le rendement en muonium dans ces liquides non polaires est tout a fait comparable a celui observC antkrieurement dans I'eau, le methanol et I'ethanol. Ceci suggtre que ni la constante dielectrique du milieu ni la mobilite des electrons libres n'a d'influence sur la formation des muonium. Cette conclusion appuie le fait que la formation des muonium ne provient pas principalement de reactions a I'interieur de la derniere cavite de la trajection du muon.La presence d'impuretes parasites diminue la durte de vie du muonium dans ces hydrocarbures; il faut donc operer avec des solvants d'une trbs grande purete. De plus, il semble qu'une reaction chimique se produit entre le muonium et I'hydrocarbure puisqu'on a trouve que la duree maximale devie

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“…[2] and the liquid employed as a solvent in the study of reaction rate constants of solutes. The example of phenol in n-hexane is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…four points of view (2,7). First, there is interest in the intrinsic properties and mode of formation of this unusual chemical species.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Muonium atoms observed in liquid hydrocarbons

Ito¹,

Ng²,

Jean³

et al. 1980

Can. J. Chem.

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Effects of very weak magnetic fields on radical pair reformation

Adair

1999

Bioelectromagnetics

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Muon Spin Rotation Spectroscopy in Metallic Spin Glass Systems

Pinkvos

Schwink

1987

Physica Status Solidi (b)

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An introduction is given into the application of muon spin rotation spectroscopy to spin glass problems. The principles of the μSR method are discussed in connection with basic properties of spin glasses. Important information provided by μSR on the dynamical behaviour of the impurity spins, the spatial structure of the freezing process, and the form of the autocorrelation function for the local fields are reviewed in chosen examples.

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Positive Muons and Muonium in Matter

Cited by 58 publications

References 61 publications

Muonium atoms observed in liquid hydrocarbons

Muonium atoms observed in liquid hydrocarbons

Effects of very weak magnetic fields on radical pair reformation

Muon Spin Rotation Spectroscopy in Metallic Spin Glass Systems

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