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    User name W. Korsch, C. Butucenau

    Log entry time 17:28:46 on July28,2001

    Entry number 68121

    keyword=Target - NMR: 40.9%, EPR: 41.1%

    16:20 NMR/EPR measurements,

    All grad. coils are off.

    16:20 Lasers#, 1,2,4 off
    16:22 move target to pick-up coil position and rotate B-field to 0 deg
    16:30 NMR done with all lasers off

    16:32 turn on lasers #5,6,7
    16:38 temperatures stable
    16:41 EPR
    16:45 lasers #5,6,7 off, start B-field rotation to 270 deg, move target to
    pol. 3He position
    16:54 lasers #1,2,4 on again

    EPR analysis: P = 41.6% (down)/40.5% (up)

    1st order fit:
    freq1: -45.55 kHz +/- 1.2 kHz | Polarisation: 41.6 % +/- 1.1 %
    freq2: 44.34 kHz +/- 1.38 kHz | Polarisation: 40.49 % +/- 1.26 %

    Comments: Performed 1st order fit only, since B-field was still drifting.
    It seems that we have some losses during the flips (masing?).
    J.P. noticed difference in slope between two spin states.

    Note: V_mod = 0.8 V