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    User name X. Zheng

    Log entry time 05:01:55 on September 4,2001

    Entry number 73312

    keyword=Target - EPR at gradient coil L=2.0A T=5.0A

    4:00am, set longitudinal gradient coil current 2.00A

    EPR conditions: cell position = pick up coil, Vmod changed to 0.7Vpp, gradient coil current L=2.00A, T=5.00A
    4:02am, EPR, freq 1/2 = 45.3/47.4KHz, P1/2 = 44.4/46.4 (large error bar)
    4:19am, EPR, freq 1/2 = 45.8/46.6KHz, P1/2 = 44.9/45.8

    conclusion: Masing is suppressed.

    details on EPR:
    -*-*-*- 4:02am-*-*-*-
    1st order:
    freq. shift = -45.29 KHz +/- 2.41 KHz, P = -44.37%+/- 2.36%
    freq. shift = 47.40 KHz +/- 2.34 KHz, P = 46.43%+/- 2.29%
    0th order:
    freq. shift = -46.62 KHz +/- 2.37 KHz, P = -45.67%+/- 2.32%
    freq. shift = 46.64 KHz +/- 2.34 KHz, P = 45.69%+/- 2.29%

    -*-*-*- 4:19am -*-*-*-
    1st order:
    freq. shift = -45.84 KHz +/- 2.26 KHz, P = -44.91%+/- 2.21%
    freq. shift = 46.70 KHz +/- 2.32 KHz, P = 45.75%+/- 2.27%
    0th order:
    freq. shift = -46.64 KHz +/- 2.22 KHz, P = -45.69%+/- 2.18%
    freq. shift = 45.23 KHz +/- 2.15 KHz, P = 44.30%+/- 2.11%