• Main INDEX
  • Monthly INDEX
  • PREV
  • NEXT

    User name H. Gao/X. Zheng

    Log entry time 23:50:14 on July15,2001

    Entry number 66297

    keyword=Target - NMR 47%, EPR 44%

    Beam has been off for longer than 2 hours,

    11:25pm, NMR, 47.07%;

    11:30pm, EPR performed with 3 lasers on and target at pick up coil position
    all gradient coils off, field @ 180 degree, polarization is 44.4% (take the average of all four fits).

    1st order fit:

    down: freq. shift = -48.36 KHz +/- 3.72 KHz, P = -44.16%+/- 3.39%
    up: freq. shift = 48.86 KHz +/- 2.13 KHz, P = 44.62%+/- 1.94%

    0th order fit:

    down: freq. shift = -48.27 KHz +/- 4.47 KHz, P = -44.08%+/- 4.09%
    up: freq. shift = 48.87 KHz +/- 3.28 KHz, P = 44.63%+/- 2.99%

    comments: tried to use 0.6 Vpp modulation source to lower the fluctuation but it actually made things worse, so the error bar of this EPR measurement is high.