Peer-Reviewed Journal Details
Mandatory Fields
O'Neill, RW;Greenwood, JB;Gradziel, ML;Williams, ID
2001
September
Measurement Science and Technology
Microcontroller based double beam modulation system for atomic scattering experiments
Published
2 ()
Optional Fields
CROSS-SECTIONS ENERGY-LOSS EXCITATION
12
1480
1485
Double beam modulation is widely used in atomic collision experiments in the case where the noise arising froth each of the beams exceeds the measured signal. A method for minimizing the statistical uncertainty in a measured signal in a given time period is discussed, and a flexible modulation and counting system based on a low cost PIC microcontroller is described. This device is capable of modifying the acquisition parameters in real time during the course of an experimental run. It is shown that typical savings in data acquisition time of approximately 30% can be achieved using this optimized modulation scheme.
BRISTOL
0957-0233
Grant Details