IDEA #9YSN8S Neutron Tubes Íòã-2, Íòã-3

NUCLEAR(cid:3)ENERGY(cid:3)AND(cid:3)SAFETY NEUTRON TUBES НТГM2, НТГM3 Description The neutron tube НТГ$2 is comprised of a cermet (glass$ metal) body housing a Penning$type ion source with in$ candescent or cold cathode, a system of forming and accel$ erating electrodes, and a neutron$generating target. The distance between the active target surface and the tube face is 25 mm. In the glass$metal version this distance is 1 mm. The neutron tube НТГ$3 is made of cermet (glass$ metal) body housing an orbitron ion source. A cylindrical neutron$generating target is arranged on the inner lateral surface of the tube body. These tubes generate neutrons with an acceleration of mi$ xed deuterium$tritium beams of energies up to 100–120 KeV, which bombard the neutron$generating target saturated with a deuterium$tritium mixture. Innovative Aspects and Main Advantages Main Characteristics Max neutron yield, (n/s) Max avg target current (mA) Radiation pulse repetition НТГM2 3×108 0,4 НТГM3 2×108 0,5 frequency (kHz) 0.05–20 0.02–30 Min radiation pulse duration (μs) Operating life (hr) Overall dimensions (mm) Diameter (without magnet) Length 5 200 35 250 3 200 60 300 The above neutron yield values were obtained at an accelerating voltage of 110 kV. The recommended value of the magnetic field induc$ tion for the neutron tube НТГ$2 is not less than 20 mT. Areas of Application These tubes are intended to generate neutrons at energies of 14 MeV. Such neutron generators are used for monitoring oil wells and ore holes, as well as in mobile or stationary neutron generators.Stage of Development:The neutron tubes NTG$2 and NTG$3 are at the stage of serial production. Note other types of neutron tubes are available as well. Fig. 1. Neutron Tubes НТГM2, НТГM3 Contact Details Institute for Nuclear Research of the National Academy of Sciences of Ukraine Prospekt Nauky, 47, 03028 Kiev$28, Dr. Nicolay Kolomiets Telephone: (380$44) 525$23$49, 525$26$14 Fax: (380$44)525$44$63 EMmail: interdep@kinr.kiev.ua 56 SCIENCE AND INNOVATION. № 4, 2006