Dynamic nuclear polarization of irradiated targets

M. L. Seely, A. Amittay, M. R. Bergström, S. K. Dhawan, V. W. Hughes, R. F. Oppenheim, K. P. Schüler, P. A. Souder, K. Kondo, S. Miyashita, K. Morimoto, S. J. St. Lorant, Y. N. Guo, A. Winnacker

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

We report studies of dynamic nuclear polarization of irradiated targets. The polarized target operated at a magnetic field of 5 T and a temperature of 1 K and was irradiated with the 20 GeV electron beam at the Stanford Linear Accelerator. Our results indicate that the temperature at which the target is irradiated is important. The maximum proton polarization attained with radiation was measured for some seven hydrogen-rich compounds. Irradiated NH3 and ND3 were polarized to high values of Pp {reversed tilde equals} 0.75 and Pd {reversed tilde equals} 0.25 with short values of polarization growth time Tp, and with radiation resistance of the polarization about a factor of 30 greater than for normal chemically-doped hydrocarbons. Hence, irradiated NH3 and ND3 appear very promising as practical polarized target materials.

Original languageEnglish (US)
Pages (from-to)303-308
Number of pages6
JournalNuclear Instruments and Methods In Physics Research
Volume201
Issue number2-3
DOIs
StatePublished - Oct 15 1982

ASJC Scopus subject areas

  • Engineering(all)

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    Seely, M. L., Amittay, A., Bergström, M. R., Dhawan, S. K., Hughes, V. W., Oppenheim, R. F., Schüler, K. P., Souder, P. A., Kondo, K., Miyashita, S., Morimoto, K., St. Lorant, S. J., Guo, Y. N., & Winnacker, A. (1982). Dynamic nuclear polarization of irradiated targets. Nuclear Instruments and Methods In Physics Research, 201(2-3), 303-308. https://doi.org/10.1016/0167-5087(82)90556-7