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New neutron generators provide high yield at low cost
Oct., I963.~
CURRENT ToPIcs
345
Mass Flowmeter for Tungsten Hex- noble, France. A completely deafluoride.--A new Mass Flowmeter mountable generator using replaceespecially for tungsten hexafluoride is able targets, Type BS-1 finds broad announced by Hastings-Raydist, Inc. application in training and education. of Hampton, Virginia. The flow It is used in studies of neutron detectransducer is of a thermal type having tion and counting and studies of no wires or moving parts in the flow shielding, moderation, and thermalistream. The Hastings Model LF- zation of fast neutrons. T ype BS-1 500W Mass Flowmeter is very sensi- can also be used for making reactor tive over the entire range from 0 to cross-section measurements and in 500 standard cc per minute with no activation analysis and tracer work. observable dead zone near zero. This The tritium target is easy to change, is a convenient range for use in vari- and the deuterium supply can be ous applications such as in the vacuum renewed. Thus, the same neutron plating of tungsten on other metals generator can be used for as long as wherein the mass flow of this hard-to- required. The T ype BS-2 neutron generator, measure gas must be metered independent of variations in static pres- on the other hand, is a sealed-off tube sure. The flow measurement depends providing a continuous or pulsed on the thermal capacity of the flowing source of neutrons. In addition to gas and this is a function of the mass handling all BS-1 type applications, flow so that corrections for pressure T y p e BS-2 is useful for making soil variations are unnecessary. Tempera- studies for highway, airport, and ture effects are small and may be similar construction ; as well as ground water measurements in drainage and neglected in practically all cases. The power supply and measuring irrigation control projects. The neucircuits use solid state components tron generator can also be used for for long life and reliability. Operation fast reactor control, sub-critical reacis from 115 volts and requires a power tor research, and in the production of input of 15 watts. Voltage regulation radioisotopes. T he third model, T ype BS-f/2, is incorporated in the circuitry. The flow is read on a 4-inch meter cali- combines the fundamental advantages brated in standard cc per minute of of both T ype BS-1 and Type BS-2 tungsten hexafluoride. The small neutron generators. It employs the transducer is installed in the flow line same control desk for operation of which may be at any convenient both neutron tubes, and a single highdistance from the meter. The flow voltage generator can be used to may also be recorded on standard supply the two different tubes. All types of d-c recorders suitable for the three neutron generators employ the D / T reaction. range of 0-5 my. New Neutron Generators Provide
Mobility Engineers Test Stirling
High Yield at Low Cost.--A family of three new compact neutron generators providing high neutron yield at low cost, and designed for either steady or pulsed operation, have been introduced by SAMES (Soci6t4 Anonyme de Machines EIectrostatiques) of Gre-
Cycle Engine.--An experimental sixhorsepower Stirling Cycle engine is being evaluated as a silent prime mover at the U. S. Army Mobility Command's Engineer Research and Development Laboratories, Fort Belvoir, Virginia. Procured under con-
CURRENT ToPIcs
345
Mass Flowmeter for Tungsten Hex- noble, France. A completely deafluoride.--A new Mass Flowmeter mountable generator using replaceespecially for tungsten hexafluoride is able targets, Type BS-1 finds broad announced by Hastings-Raydist, Inc. application in training and education. of Hampton, Virginia. The flow It is used in studies of neutron detectransducer is of a thermal type having tion and counting and studies of no wires or moving parts in the flow shielding, moderation, and thermalistream. The Hastings Model LF- zation of fast neutrons. T ype BS-1 500W Mass Flowmeter is very sensi- can also be used for making reactor tive over the entire range from 0 to cross-section measurements and in 500 standard cc per minute with no activation analysis and tracer work. observable dead zone near zero. This The tritium target is easy to change, is a convenient range for use in vari- and the deuterium supply can be ous applications such as in the vacuum renewed. Thus, the same neutron plating of tungsten on other metals generator can be used for as long as wherein the mass flow of this hard-to- required. The T ype BS-2 neutron generator, measure gas must be metered independent of variations in static pres- on the other hand, is a sealed-off tube sure. The flow measurement depends providing a continuous or pulsed on the thermal capacity of the flowing source of neutrons. In addition to gas and this is a function of the mass handling all BS-1 type applications, flow so that corrections for pressure T y p e BS-2 is useful for making soil variations are unnecessary. Tempera- studies for highway, airport, and ture effects are small and may be similar construction ; as well as ground water measurements in drainage and neglected in practically all cases. The power supply and measuring irrigation control projects. The neucircuits use solid state components tron generator can also be used for for long life and reliability. Operation fast reactor control, sub-critical reacis from 115 volts and requires a power tor research, and in the production of input of 15 watts. Voltage regulation radioisotopes. T he third model, T ype BS-f/2, is incorporated in the circuitry. The flow is read on a 4-inch meter cali- combines the fundamental advantages brated in standard cc per minute of of both T ype BS-1 and Type BS-2 tungsten hexafluoride. The small neutron generators. It employs the transducer is installed in the flow line same control desk for operation of which may be at any convenient both neutron tubes, and a single highdistance from the meter. The flow voltage generator can be used to may also be recorded on standard supply the two different tubes. All types of d-c recorders suitable for the three neutron generators employ the D / T reaction. range of 0-5 my. New Neutron Generators Provide
Mobility Engineers Test Stirling
High Yield at Low Cost.--A family of three new compact neutron generators providing high neutron yield at low cost, and designed for either steady or pulsed operation, have been introduced by SAMES (Soci6t4 Anonyme de Machines EIectrostatiques) of Gre-
Cycle Engine.--An experimental sixhorsepower Stirling Cycle engine is being evaluated as a silent prime mover at the U. S. Army Mobility Command's Engineer Research and Development Laboratories, Fort Belvoir, Virginia. Procured under con-