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    User name X. Zheng, W. Korsch

    Log entry time 11:53:09 on July24,2001

    Entry number 67385

    keyword=Target - NMR: 39.3%, EPR: 39.6%

    10:30 am NMR measurement

    Conditions: beam off, turned all trans. lasers off, moved target to pick-up coil position, rotated B-field to 0 deg, all grad. coils off

    NMR with all lasers off. P = 39.3%

    10:55 EPR with laser #6 on

    D2 and photodiode signals are very small with one laser only (~11 muV(?)/ 11mV)
    -> more sensitive to noise. Therefore Xiaochao optimized the abs. gain
    before AFP sweep. Based on the EPR spectrum she decided to take the
    next EPR measurments with 3 lasers on, since signal is still relatively noisy.

    EPR: P = 39.6%

    0th order fit:
    freq1: -43.96 kHz +/- 2.51 kHz | Polarisation: 40.75 % +/- 2.32 %
    freq2: 41.84 kHz +/- 2.49 kHz | Polarisation: 38.78 % +/- 2.31 %

    1st order fit:
    freq1: -42.85 kHz +/- 2.74 kHz | Polarisation: 39.72 % +/- 2.54 %
    freq2: 42.29 kHz +/- 2.51 kHz | Polarisation: 39.20 % +/- 2.32 %

    Comments: abs. gain adjustments before sweep, V_mod = 0.8 V, Wavetek
    amplitude: 16.0 V, Wavetek freq: 11.83 MHz (rotated B-field from 270 deg
    to 0 deg before), one laser (#6)