On the Correlation between EPR and Positron Annihilation Measurements on gamma-Irradiated Acetyl Methionine

Morten Mostgaard Eldrup; E. Lund-Thomsen; O. E. Mogensen

doi:10.1063/1.1676966

On the Correlation between EPR and Positron Annihilation Measurements on gamma-Irradiated Acetyl Methionine

Morten Mostgaard Eldrup, E. Lund-Thomsen, O. E. Mogensen

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Abstract

The dose dependence of the relative EPR signal intensity and positron lifetime spectrum was measured for γ‐irradiated acetyl methionine in the dose range from 0 to 30 Mrad. Angular correlation measurements were performed for the doses 0 and 30 Mrad. The result of the irradiation was the creation of EPR centers and inhibition of positronium formation. For one sample, irradiated with a dose of 30 Mrad, EPR and positron lifetime spectra were followed over a period of 50 days after the irradiation. The inhibiting effect and the EPR signal intensity decreased with time. No simple correlation could be established between the number of EPR centers and the positron annihilation data, but other possible explanations are discussed.

Original language	English
Journal	Journal of Chemical Physics
Volume	56
Issue number	10
Pages (from-to)	4902-4906
ISSN	0021-9606
DOIs	https://doi.org/10.1063/1.1676966
Publication status	Published - 1972

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title = "On the Correlation between EPR and Positron Annihilation Measurements on gamma-Irradiated Acetyl Methionine",

abstract = "The dose dependence of the relative EPR signal intensity and positron lifetime spectrum was measured for γ‐irradiated acetyl methionine in the dose range from 0 to 30 Mrad. Angular correlation measurements were performed for the doses 0 and 30 Mrad. The result of the irradiation was the creation of EPR centers and inhibition of positronium formation. For one sample, irradiated with a dose of 30 Mrad, EPR and positron lifetime spectra were followed over a period of 50 days after the irradiation. The inhibiting effect and the EPR signal intensity decreased with time. No simple correlation could be established between the number of EPR centers and the positron annihilation data, but other possible explanations are discussed.",

author = "Eldrup, {Morten Mostgaard} and E. Lund-Thomsen and Mogensen, {O. E.}",

year = "1972",

doi = "10.1063/1.1676966",

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T1 - On the Correlation between EPR and Positron Annihilation Measurements on gamma-Irradiated Acetyl Methionine

AU - Eldrup, Morten Mostgaard

AU - Lund-Thomsen, E.

AU - Mogensen, O. E.

PY - 1972

Y1 - 1972

N2 - The dose dependence of the relative EPR signal intensity and positron lifetime spectrum was measured for γ‐irradiated acetyl methionine in the dose range from 0 to 30 Mrad. Angular correlation measurements were performed for the doses 0 and 30 Mrad. The result of the irradiation was the creation of EPR centers and inhibition of positronium formation. For one sample, irradiated with a dose of 30 Mrad, EPR and positron lifetime spectra were followed over a period of 50 days after the irradiation. The inhibiting effect and the EPR signal intensity decreased with time. No simple correlation could be established between the number of EPR centers and the positron annihilation data, but other possible explanations are discussed.

AB - The dose dependence of the relative EPR signal intensity and positron lifetime spectrum was measured for γ‐irradiated acetyl methionine in the dose range from 0 to 30 Mrad. Angular correlation measurements were performed for the doses 0 and 30 Mrad. The result of the irradiation was the creation of EPR centers and inhibition of positronium formation. For one sample, irradiated with a dose of 30 Mrad, EPR and positron lifetime spectra were followed over a period of 50 days after the irradiation. The inhibiting effect and the EPR signal intensity decreased with time. No simple correlation could be established between the number of EPR centers and the positron annihilation data, but other possible explanations are discussed.

U2 - 10.1063/1.1676966

DO - 10.1063/1.1676966

M3 - Journal article

VL - 56

SP - 4902

EP - 4906

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 10

ER -

On the Correlation between EPR and Positron Annihilation Measurements on gamma-Irradiated Acetyl Methionine

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