Positron spin relaxation in naphthalene |
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Authors: | A Bisi G Consolati F Quasso L Zappa |
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Institution: | (1) Istituto di Fisica del Politecnico, 20133 Milano, Italia |
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Abstract: | Summary The remaining spin polarizationP of positrons was measured in naphthalene against longitudinal magnetic-field strength. The measuring method was based on
the relative yield of Ps in triplet and singlet state. In a zero fieldP is reduced to 50% of the initial polarization and approaches 100% upon increasing the applied field to larger values. This
effect, which in teflon is quite absent, appears to be determined by the specific behaviour of positrons in naphthalene.
This work was supported by CISM (Centro Interuniversitario di Struttura della Materia) of Ministero Pubblica Istruzione and
by GNSM (Gruppo Nazionale di Struttura della Materia) of CNR. |
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Keywords: | Positron states |
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