Ludlum Medical Physics Model 2241-4 Neutron Radiation Dose Meter

The Ludlum model 2241-4  Portable Neutron Ratemeter/Scaler with moderated (³He) 9” Remball, is designed to make  mRem neutron survey measurements for a variety of medical and health physics applications.  The model 2241-4 has the necessary sensitivity for the monitoring of neutron energies produced in the Megavoltage Linac environments in Radiation Therapy Facilities.