The telescoping boom radiator concept for multimegawatt space power systems

Koester, J. K.; Juhasz, Albert J.

doi:10.2514/6.1991-3497

Cited by 3 publications

(1 citation statement)

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“…In the radiation therapy of superlicial tumours with reactor fission neutrons (Koester 1984) the RENT converter facility (Koester 1984, Wagner et a1 1992 at the FRM research reactor delivers a collimated neutron beam, which also makes additional in vivo activation analysis of the irradiated tissue possible.…”

Section: Methodsmentioning

confidence: 99%

Metabolism and pathophysiology of sodium and chlorine in tissue after neutron irradiation

Koester

Knopf²,

Auberger³

1994

Phys. Med. Biol.

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The photon emission of tissue was measured after radiotherapy with various doses of fission neutrons. Spectral analyses of the decay rates resulted in data for the exchange of sodium and chlorine between the irradiated tissue and the whole body. In 12 cases we found that about three fifths of Na and Cl exchange rapidly between the extravascular and vascular liquids with a turnover half-life of 13 +/- 2 min. Slowly exchangeable or non-exchangeable fractions are deposited in the soft tissue. New defined mass exchange rates for Na and Cl amount to an average of 0.8 mval min-1 kg-1 of soft tissue. The turnover of the electrolytes in tissue with large tumours is about twice that in tissues with small metastasis. Depending on dose, radiotherapy led in all cases to distinct variations of the metabolism. A maximum of the exchange of Cl combined with a minimum of Na occurs at about 85 Gy of conventional or at 10 Gy of lead-filtered fission neutron radiation. These results show directly for the first time the local response of the electrolyte metabolism to therapy.

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Section: Methodsmentioning

confidence: 99%

Metabolism and pathophysiology of sodium and chlorine in tissue after neutron irradiation

Koester

Knopf²,

Auberger³

1994

Phys. Med. Biol.

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NASA Advanced Radiator Technology Development

Koester¹,

Juhasz²

1994

AIP Conference Proceedings

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An overview of the LeRC CSTI thermal management program

Juhasz

1991

Conference on Advanced SEI Technologies

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This report presents an integrated multi-element project effort, currently being carried out at NASA LeRC, for the development of space heat rejection subsystems, with special emphasis on light weight radiators, in support of SEI power system technology, and in particular the SP-IO0 program. Principal project elements include both contracted and in house efforts. Included in the first category are two contracts, with Rockwell International (RI) and Space Power Incorporated (SPI), aimed at the development of advanced radiator concepts (ARC), and demonstration of a flexible fabric heat pipe radiator concept being conducted by DOE/PNL under an interagency agreement. In house work is designed to guide and support the overall program by system integration studies, heat pipe testing and analytical code development, radiator surface morphology alteration for emissivity enhancement, and composite materials research focussed on the development of light weight high conductivity fins.

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The telescoping boom radiator concept for multimegawatt space power systems

Cited by 3 publications

References 0 publications

Metabolism and pathophysiology of sodium and chlorine in tissue after neutron irradiation

Metabolism and pathophysiology of sodium and chlorine in tissue after neutron irradiation

NASA Advanced Radiator Technology Development

An overview of the LeRC CSTI thermal management program

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