Californium - 252 Neutron Sources

Standard Californium - 252 Sources: Model 10 Series

• Single-encapsulated neutron source generally used as inner capsules of multi-encapsulated sources.
  
  
• The capsule material used is either 304L stainless steel or Zircaloy-2, and the closure is TIG welded.
  
  

• The Model 10 series of neutron sources are singly-encapsulated sources generally used as the inner capsules of multiply-encapsulated sources. The Model 10 sources have an outside diameter of 0.217/0.218 inches and are available in two lengths, the longer of which is equivalent to the Savannah River SR-CF-1X capsule. Capsule material may be either Type 304L stainless steel or Zircalloy-2. Closure is by tungsten-inert-gas (TIG) welding. The sources are designed to meet Special Form requirements even after infinite decay of the Cf-252 contents.
  
  All Model 10 sources are certified by the U.S. Department of Transportation (USDOT) as Special Form, and all have been approved for licensing purposes by the U.S. Nuclear Regulatory Commission (USNRC) for general uses other than well logging.
  
  The Model 10 sources offer great flexibility in meeting customer outer capsule configuration and material requirements because Model 10 sources may be further encapsulated in capsules of arbitrary design, and still be licensed and transported as Model 10 sources.

  Nominal dimensions for the Frontier Technology Corporation Model 10 and 10S sources are shown below:

  Dimensions	Model 10	Model 10S
  Outside diameter	0.217/0.218 inch	0.217/0.218 inch
  	5.51/5.54mm	5.51/5.54mm
  Outside length	0.975 inch	0.470 inch
  	24.77mm	11.94mm
  Inside diameter	0.154 inch	0.154 inch
  	3.91mm	3.91mm
  Inside length	0.75 inch	0.24 inch
  	19.05mm	6.10mm
  Maximum content:	10 milligrams	4 milligrams
  Californium-252

Standard Neutron Source Model 10S per Dwg. No. A10010-AA01

Standard Neutron Source Model 10 per Dwg. No. A10010-AA00

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Standard Californium - 252 Sources: Model 100 Series

• Double encapsulated, employing a Model 10 series source as the primary encapsulation.
  
  
• The outer capsule material is either 304L stainless steel or Zircaloy-2.
  
  The Model 100 series of neutron sources are doubly-encapsulated sources which employ a Model 10 series source as the primary encapsulation. Model 100 series sources have an outside diameter of 0.370/0.371 inches and are available in two lengths, both of which are available with or without a 10-32 threaded stud on one end. The longer length version with the stud is equivalent to the Savannah River SR-CF-100 series capsules. Outer capsule material may be either type 304L stainless steel or Zircalloy-2. Closure is by TIG welding.
  
  Thirty-two versions of the standard length source and thirty-two versions of the shortened source are possible as the result of various combinations of inner and outer capsule materials and orientations, and the presence of or lack of the threaded stud. All sixty-four versions of the Model 100 series are certified by the USDOT as Special Form, and all have been approved for licensing purposes by the USNRC for general uses.

  Nominal dimensions for the Frontier Technology Corporation Model 100 and Model 100S sources are shown below:

  Dimensions	Model 100	Model 100s
  Outside diameter	0.370/0.371 inch	0.370/0.371 inch
  	9.398/9.423mm	9.398/9.423mm
  Outside length w/stud	1.48 inches	0.97 inch
  	37.59mm	24.6mm
  Outside length w/o stud	1.28 inches	0.77 inch
  	32.5mm	19.55mm
  Inside diameter	0.234/0.235 inch	0.234/0.235 inch
  	5.953/5.982mm	5.953/5.982mm
  Inside length	1.02 inches	0.52 inch
  	30.6mm	13.2mm
  Maximum content:	10 milligrams	4 milligrams
  Californium-252

Standard Neutron Source Model 100S per Dwg. No. A10010-PA02

Standard Neutron Source Model 100 per Dwg. No. A10100-PA01

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Semi-Custom Neutron Sources

• Immobilization of radioactive material
• Restriction of radioactive material to a specified location within the capsule, with or without immobilization
• Additional encapsulation(s) meeting specific geometric, environmental, or other req.

Custom Neutron Sources

• Custom Cf - 252 neutron sources are those which because of size, material requirements, or other reasons must be completely designed for a specific application
• Experienced in designing, fabrication and welding such metals as:
• Platinum and alloys

Antimony-Beryllium Neutron Sources

• Regenerative start - up sources for nuclear reactors
• Most FTC sources are of the pressed - powder pellet type
• Build to reactor specifications, or build to consumer drawings

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