CONTACT RESISTANCE:

One factor governing noise is the sample contact resistance. Acceptable values range near 500 m. Samples with resistance greater than about 100 kcannot be measured well in the 50 or 60 Tesla pulsed magnets.

For pulsed field experiments, interference, rather than true thermodynamic noise, is the biggest concern. Interference consists of many types of noise sources. Natural sources include cosmic background radiation and radiation from the sun. Man-made sources consist of TV, radio, cellular telephones, store alarms, and most importantly, the pulsed magnet and the computer and instrument rack.