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MUST2
SAMURAI_2018
S3-LEB-LPC
SUPERNEMO
MUGAST
EXPAND
SCALP
GALATRON
HiCARI
VELO
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| MUGAST |
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 Thu Jul 18 19:40:11 2019, iulian, e768s, OFFLINE, General, Fixed, LiF, Ex in 19F from run 72 
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 Thu Jul 18 22:50:58 2019, iulian, Jenn, Franco, e768s, OFFLINE, General, Fixed, LiF, Ex in 19F from run 72
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Sat Jul 20 19:23:37 2019, Christiqn, e768s, OFFLINE, General, Fixed, LiF, Ex in 19F from run 72
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Message ID: 5201
Entry time: Sat Jul 20 19:23:37 2019
In reply to: 5122
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| Author: |
Christiqn |
| ExpNbr: |
e768s |
| Type: |
OFFLINE |
| Category: |
General |
| Status: |
Fixed |
| Target-Source: |
LiF |
| Subject: |
Ex in 19F from run 72 |
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Data: Total integral for peak region around 4 MeV in 19F during run 72:
~35 average peak height over 27 bins = 945 counts. Note that this includes what looks like background in the spectrum. In reality, however, this should be considered part of the yield, because the 1.5 MeV , 4.0 MeV peak, and 5.5 MeV peaks just about touch, and are about the same intensity. So realistic integral is approximately the number of counts between 2.8 and 4.8 MeV.
Comparison to previously observed cross section [F. de O.]:
Ex = 3.999+4.033 [19F]
d-sigma/d-Omega ~ 3.5mb/sr (approximately constant over the range of 0-20 deg c.m.
d-Omega = 0.061 sr [over 0-20 deg. c.m]
=>
sigma = 0.21mb
Assumed efficiencies:
e_MUGAST = 0.5
e_charge-state = 0.5
e_VAMOS = 0.8 [intrinsic]
d_tgt = 337ug/cm2 [7Li component]
Run72:
beam = 1e8pps
run time = 2.4h
Total reaction rate = 2.2k/h
Coincidence detection rate = 440/h
Coincidence detection yield over 2.4h [run72] = 1056
Consistent with the observation for MUGAST-VAMOS coincidences for the run. |