Valvo Raag

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Valvo Raag (9. juuni 1936, Kuressaare17. august 2011, Lincoln, Massachusetts, USA[1]) oli eesti päritolu USA füüsik.[2]

Elulugu[muuda | muuda lähteteksti]

Valvo Raag lahkus Eestist koos ema, isa ja kahe vennaga 1944. aastal[3].

Raag lõpetas 1958 füüsikuna Browni Ülikooli USA-s, Rhode Islandi osariigis Providence'is, ning täiendas end 1958–59 Helsingi Ülikoolis. 1964. aastal kaitses ta M.Sc. füüsikas New Yorgi Ülikoolis. 1959–69 töötas ta New Jerseys RCAs (1959–62 keemia- ja füüsikalaboris, 1962–69 termoelektriliste toodete arenduses), aastast 1969 Resalab Scientificus (Menlo Park, California)[2] ning hiljem Jet Propulsion Laboratoryga seotud väikeses uurimisfirmas Syncal.[4]

Teadustöö[muuda | muuda lähteteksti]

Valvo Raagi peamine uurimisvaldkond oli termoelekter.[2] Tema töötulemusi on kasutatud kosmosetehnikas[4].

Isiklikku[muuda | muuda lähteteksti]

2003. aastal tagastas Raag Kuressaare raamatukokku sealt 1944. aastal laenatud raamatu[3].

Pensionipõlves elas ta koos oma abikaasa Kaijaga Massachusettsi osariigis Lincolnis[5]. Nende tütar Tarja Raag on arengu- ja soopsühholoogiale spetsialiseerunud psühholoogiateadlane, USA-s Maine'i osariigis Waterville'is tegutseva Colby College'i psühholoogiadotsent [6].

Teoseid[muuda | muuda lähteteksti]

  • "Distribution of Cathode Sublimation Deposits in a Receiving Tube as Determined by X-Ray Spectrometric Scanning" // Advances in Electron Tube Techniques (1963) 2
  • "Thermoelectric Properties of Niobium in the Temperature Range 300°–1200° K" // J. Appl. Phys. 2045 (1965) 36
  • "Design and Performance Analysis of Panel-Type Solar Thermoelectric Generators" // Energy Conversion 169 (1968) 8
  • "The Performance Characteristics of Silicon-Germanium Alloys in Thermoelectric Applications" Resalab Scientific (undated monograph)
  • F. de Winter (ed. & coauthor), V. Raag, N. S. Elsner, L. H. Rovner, G. Stapfer: "Accelerated Testing for Sublimation and Chemical Compatibility on a 4-Couple SiGe Module: Test No 1 - Module

with 80 a/o Si 20 a/o Ge, Dynaquartz Insulation" JPL Eng. Memo 342-148 (Rept. 900-488), August 13, 1971

  • V. Raag and W. D. Leonard: "Mathematical Model and Computer Program for the Design and Analysis of Silicon-Germanium Air-Vac RTGs" Resalab Scientific Memorandum # 14 Prepared for JPL on Contract 952808, September 7, 1971
  • W. D. Leonard and V. Raag: "Performance of the MHW RTG in the Temperature Range 900 to 1000 C and Lower Bounds on Gains Obtainable From The Use of Radiation Fins," Resalab Scientific Memorandum # 12 Prepared for JPL on Contract 952808, June 22, 1971
  • V. Raag "Performance Characteristics of a Silicon-Cermanium RTG in Long-Term Operation" Resalab Scientific Memorandum # 1 Prepared for JPL on Contract 952808, April 29, 1969
  • V. Raag "Relationship of Changes in the Heat Input to the Power Output of a Thermoelectric Device" Resalab Scientific Memorandum # 2 Prepared for JPL on Contract 952808, July 30, 1969
  • V. Raag "Performance and Weight Dependence of a Silicon-Germanium RTG on Fuel Capsule Temperature and Heat Flux" Resalab Scientific Memorandum # 3 Prepared for JPL on Contract 952808,

July 2, 1969

  • V. Raag "Optimization of Thermoelectric Generators for Fixed Temperature and Fixed Heat Input Operation" Resalab Scientific Memorandum # 4 Prepared for JPL on Contract 952808, July 30, 1969
  • V. Raag "Performance Characteristics of Typical Silicon-Germanium RTGs in Air Operation" Resalab Scientific Memorandum # 5 Prepared for JPL on Contract 952808, October 22, 1969
  • V. Raag "Thermoelectric Properties of 80 a/o Si - 20 a/o Ge Alloy as a Function of Time and Temperature" Resalab Scientific Memorandum # 6 Prepared for JPL on Contract 952808, March 3, 1970
  • V. Raag "The Time and Temperature Dependence of the Thermoelectric Properties of SiGe Alloys" Proc. 1975 IECEC, p 723
  • V. Raag "The Time and Temperature Behavior ofthe Thermoelectric Behaviof of78 a/o Si - 22 a/o Ge Alloy" Proc. 1976 IECEC, pp 1527-1532
  • V. Raag "The Use of Silicon-Germanium Alloys in Radioisotope Thermoelectric Generators" Proc. 1976 IECEC, pp 1586-1590
  • V. Raag "Thermoelectric Properties of 80 a/o Si - 20 a/o Ge Alloy" Proc. 1974 IECEC, pp 156-159 (JPL-Sponsored R&D results)
  • V. Raag "Dopant Precipitation in SiGe Alloys" Proc. l972 IECEC, pp 168-173 (JPL-Sponsored R&D results)
  • V. Raag Research and Development ofa Silicon-Germanium Alloy" RCA Final Report on Contract NAS 5-3410, December 1963.
  • V. Raag "Design and Performance Analysis of Silicon-Germanium RTGs" Proc. 1969 IECEC, pp 395-402 (JPL-Sponsored R&D results).
  • V. Raag "The Calculated Long-Term Performance Characteristics of a Typical Silicon-Germanium RTG" Proc. 1970 IECEC, pp l5-8 to 15-10 (JPL-Sponsored R&D results)

Viited[muuda | muuda lähteteksti]

  1. Valvo Raag järelehüüe, Tributes.com
  2. 2,0 2,1 2,2 "Eesti teaduse biograafiline leksikon", 3. köide
  3. 3,0 3,1 Väliseestlane tagastab 59 aasta eest laenatud raamatu Delfi/BNS BNS 25. märts 2003
  4. 4,0 4,1 Francis de Winter, Gerhard Stapfer, Enrique Medina "The Design of a Nuclear Power Supply With a 50 Year Life Expectancy: The JPL Voyager's SiGe MHW RTG" lk 4, 6
  5. Profiles in Giving: Valvo Raag Tufts
  6. Tarja Raag Colby College

Kirjandus[muuda | muuda lähteteksti]

Välislingid[muuda | muuda lähteteksti]

Livre.png Käesolevas artiklis on kasutatud "Eesti teaduse biograafilise leksikoni" materjale.