The features of P 211 are critical for applications that depend
upon measuring the variations of neutron populations following
the source burst. The P 211 neutron tube was originally designed
by Sandia National Laboratories and incorporates the Sandia-
designed “Zetatron” neutron tube. - Neutron die-away
measurements - Pulses both accelerating voltage and ion source -
No background between pulses - Analysis methods: Neutron die-
away - Generator characteristics: Pulsed output (no background
between pulses) - Primary elements detected: U, Pu - Transuranic
waste assay - Fissionable materials Thermo is now the only
manufacturer of the Zetatron neutron tube. Thermo supplies P 211
neutron generators as well as Zetatron neutron tubes to Sandia
and other government and private users.