DESIGN DEFINITION AND SAFETY EVALUATION STUDY OF A COMPACT $sup 60$Co HEAT SOURCE IN SPACE. Final Report.

Ruêhle, W.

doi:10.2172/4751017

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“…3 Since it is stated that surface diffusion represents a faster migration than grain-boundary or volume diffusion through the shield, to provide an effective cobalt diffusion barrier this shield must be one continuous block with no discontinuities that permit rapid surface diffusion. Shield strength requires reerystallization and swaging, but machines are available with only sufficient capacity to fabricate small body sections.…”

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confidence: 99%

REACIOR Reply by Author to W. Ruehle

Borete¹

1970

Journal of Spacecraft and Rockets

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f I ^HE article by J: E. Boretz 4 develops the type of compari--«-sons needed by developers and potential users of large space station power systems. It was a particularly interesting article because he meticulously listed his selection rationale and pertinent factors. Consequently, because of the value of such data I would like to up-date the assumptions regarding radioisotopes and show the effects on the results. It is true that ft emitters are usually easier to produce than a emitters and can be produced in much larger quantities at far less cost. The statement "ft shielding requirements are much higher [than for a emitters, thus] increasing system weight and greatly complicating handling, safety in abort, and recovery problems" would be true only if one tried to fit a ft emitter like Co-60 into a heat source concept developed for an a emitter such as Pu-238.It has been shown 1 that Co-60 and Pu-238 heat source weights are comparable in the multikilowatt power range if MILLIONS OF DOLLARSGreater than 700 kw -Co'0

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Section: Referencesmentioning

confidence: 99%

REACIOR Reply by Author to W. Ruehle

Borete¹

1970

Journal of Spacecraft and Rockets

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DESIGN DEFINITION AND SAFETY EVALUATION STUDY OF A COMPACT $sup 60$Co HEAT SOURCE IN SPACE. Final Report.

Cited by 1 publication

References 2 publications

REACIOR Reply by Author to W. Ruehle

REACIOR Reply by Author to W. Ruehle

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