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    User name X. Zheng

    Log entry time 15:59:00 on July11,2001

    Entry number 65784

    Followups:

    keyword=Target - Duke EPR 41.6%

    6:51 am, EPR for Duke
    3 lasers (#4, #6, #7) were used
    photodiode signal DC -46.7mV, D2 signal ~ +/- 40 uV from lock-in
    gradient coils off

    Calibration constant obtained from :
    pumping chamber temperature 222 C (from Kevin's entry 65782),
    target chamber temperature 50 C,
    room temperature density: 9.18 amg,
    pumping chamber volume 121.1 cc,
    target chamber volume 75.9 cc, (from UVa cell data sheet).

    Result:

    1st order fit:
    down: freq. shift = -49.10 KHz +/- 2.20 KHz, P = -41.65%+/- 1.87%
    up: freq. shift = 48.34 KHz +/- 2.19 KHz, P = 40.99%+/- 1.86%

    0th order fit:
    down: freq. shift = -49.09 KHz +/- 2.25 KHz, P = -41.63%+/- 1.91%
    up: freq. shift = 48.48 KHz +/- 2.25 KHz, P = 41.11%+/- 1.91%


    AFP measurement is stable: