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James A. Van Allen journal, October 1955-March 1958
Page 205
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we didn't try electron precession. I told him I really did not know He suggested Diphenyl Picryl Hydrozyl as a "famous" substance of very narrow band width as a suitable substance in which to try free electron precession magnetometry. [a free radical present] ~1 mc/second at ~1 gauss. _______________________________ May be of interest to consider..Also may be some basic fallacy. Will think about. ---------------------------------------------------- Even if fundamentally sound idea, audio technique with protons may (or may not?) still be much simpler McGrath pointed out possible large amplitude of signal (m.v. versus μv. with protons)
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we didn't try electron precession. I told him I really did not know He suggested Diphenyl Picryl Hydrozyl as a "famous" substance of very narrow band width as a suitable substance in which to try free electron precession magnetometry. [a free radical present] ~1 mc/second at ~1 gauss. _______________________________ May be of interest to consider..Also may be some basic fallacy. Will think about. ---------------------------------------------------- Even if fundamentally sound idea, audio technique with protons may (or may not?) still be much simpler McGrath pointed out possible large amplitude of signal (m.v. versus μv. with protons)
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