User name Armstrong
Log entry time 21:13:30 on July30,2003
Entry number 108222
Followups:
keyword=Target Temperature Study (NMR)18:34 Start Target Temperature study (as instructed
by Vince). Lasers 4,6,7 turned off. Wait for oven temperature to
stabilize.
I should have done an NMR measurement first, to get a baseline
before turning the lasers off...
18:58 Do NMR, lasers off, 3He cell position.
Result: 36.79% (using laser off number)
19:01 Turn on Laser 4
19:02 Turn on Laser 6
19:03 Turn on Laser 7
waiting for temperatures to stabilize...
19:22 Do NMR, lasers on, 3He cell position.
Result: 38.06% (using laser on number)
19:23 Lasers 4,6,7 turned off
waiting for temperatures to stabilize...
19:42 Do NMR, lasers off, 3He cell position.
Result: 36.27% (using laser off number)
19:45 Turn on Laser 4
19:46 Turn on Laser 6
19:47 Turn on Laser 7
waiting for temperatures to stabilize...
20:14 Do NMR, lasers on, 3He cell position.
Result: 37.54% (using laser on number)
20:16 Lasers 4,6,7 turned off
waiting for temperatures to stabilize...
20:40 Do NMR, lasers off, 3He cell position.
Result: 35.65% (using laser off number)
20:41 Turn on Laser 4
20:42 Turn on Laser 6
20:44 Turn on Laser 7
waiting for temperatures to stabilize...
20:14 Do NMR, lasers on, 3He cell position.
oops.. I hit the Go button a second time
on the NMR screen, and since I don't know how to elegantly abort the routine, I
end up with two NMRs in a row. Ouch.
Result (of the 2nd NMR) : 36.11% (using laser on number)
Now, I'll let the target quietly pump back up...
Striptool of target temperatures during this procedure is below.
FIGURE 1
