Minutes from target meeting held August 29 2008 in 892-1-B09

These minutes are available also from:

http://wwwcompass.cern.ch/compass/detector/target/Minutes/2008/

a) Kaori: two error sources in proton polarization. One from the fit to 
the Curie law and the other from the background protons in the target cells. 
The background protons lead to asymmetric error with the tendency to enhance
the negatively polarized signals. For positive polarization the error is 
about +-2.5 % and for negative +-3 %. 

b) Naoaki: Teflon-FEP has been used as proton free construction material for
target cells. 

c) Jaakko: The fluorine-19 with spin 1/2 and gyromagnetic ratio 4.007757 MHz/T
has 100 % natural abundance. Most of the other plastics and polymers have 
protons
http://en.wikipedia.org/wiki/Polyamide
http://en.wikipedia.org/wiki/Aramide
http://en.wikipedia.org/wiki/Teflon
http://en.wikipedia.org/wiki/Polymer

d) Yuri: the cross polarization of the nuclei with small gyromagnetic ratio
can help to study these rare nuclei in molecules with NMR.