Our NQR apparatus is an hybridization of Oxford instruments continuous flow cryostat, a TECMAG spectrometer, and a home build head. All systems are controled by a PC under windows NT, and experimental parameter such as, temperature, frequency etc. can be modified automatically.
The construction of this instrument was funded by:
Instrument Scientist:
Cryostat
 
The Oxford instruments continuous flow cryostat (CF1200 daynamic) allows a working temperatures ranging from 1.6 to 450K, and a 62mm sample space diameter. The cryostat is placed in an AD-Vance Magneticsm-metal tube in order to have zero field.
Spectrometer
 
We use TECMAG APPOLO spectrometer with two channels. This spectometer can also be used for double resonance. The power supply is ATM-M3446 1KW capable of working between 10-130 MHz. For tuning and meaching we use the Morris Instruments Model 405NV+ RF Sweeper.
 
Head
 
The head is made of series-parallel tank circuit using Cylindrical Teflon capacitors. The capacitance can be varied from the top of the cryostat. In order to load a sample the head must be removed from the cryostat.

Amit Kanigel and Zaher Salman are really working for a change.


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