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{{Infobox scientist
⚫
'''Arthur W. Pryor''' (1928 – 6 September 2014) was an Australian physicist known for his contributions to [[neutron diffraction]]<ref>R. S. Seymour and A. W. Pryor, Neutron diffraction study of NH<sub>4</sub>Br and NH<sub>4</sub>I, ''Acta Cryst. B'' '''26''', 1487-1491 (1970).</ref><ref>G. L. Paul and A. W. Pryor, The study of sodium nitrate by neutron diffraction, ''Acta Cryst. B'' '''27''', 2700-2702 (1971).</ref> and infrared laser [[isotope separation]].<ref name=LIS1>J.E. Eberhardt,
|name = A. W. Pryor
|image =
|width =
|birth_date = 1928
|birth_place =
|nationality = Australian
|death_date = September, 2014
|death_place = [[Sydney]]
|field = [[Crystallography]]
|alma_mater = [[University of Queensland]]<br>[[Durham University]]
|doctoral_advisor =
|notable_students =
|work_institutions = [[Australian Atomic Energy Commission]]<br>[[Macquarie University]]<br>
|known_for = [[Crystalography]]<br>[[Neutron diffraction]]<br>[[Molecular laser isotope separation]]<br>
|prizes =
}}



⚫
'''Arthur William Pryor''' (1928 – 6 September 2014) was an Australian physicist known for his contributions to [[neutron diffraction]]<ref>R. S. Seymour and A. W. Pryor, Neutron diffraction study of NH<sub>4</sub>Br and NH<sub>4</sub>I, ''Acta Cryst. B'' '''26''', 1487-1491 (1970).</ref><ref>G. L. Paul and A. W. Pryor, The study of sodium nitrate by neutron diffraction, ''Acta Cryst. B'' '''27''', 2700-2702 (1971).</ref> and infrared laser [[isotope separation]].<ref name=LIS1>J.E. Eberhardt,
D.A. Johnson, R.B. Knott, A.W. Pryor, A.B. Waugh,Multiphoton dissociation of two vanadyl compounds, ''Chem. Phys. Lett.'' '''93''', 448-452 (1982).</ref><ref name=LIS2>J.E. Eberhardt, I.E. Hoare, D.A. Johnson, R.B. Knott, A.W. Pryor,
D.A. Johnson, R.B. Knott, A.W. Pryor, A.B. Waugh,Multiphoton dissociation of two vanadyl compounds, ''Chem. Phys. Lett.'' '''93''', 448-452 (1982).</ref><ref name=LIS2>J.E. Eberhardt, I.E. Hoare, D.A. Johnson, R.B. Knott, A.W. Pryor,
A.B. Waugh, Multiphoton dissociation of some volatile uranyl complexes. I. The phenomena of reversible and permanent dissociation, ''Chem. Phys.'' '''72''', 41-49 (1982).</ref><ref name=AWP>A. W. Pryor, Personal memories of two advanced uranium enrichment projects at Lucas Heights in the years 1972-1980, ''The Australian & New Zealand Physicist'' '''33''' (3-4), 53-58 (1997).</ref>
A.B. Waugh, Multiphoton dissociation of some volatile uranyl complexes. I. The phenomena of reversible and permanent dissociation, ''Chem. Phys.'' '''72''', 41-49 (1982).</ref><ref name=AWP>A. W. Pryor, Personal memories of two advanced uranium enrichment projects at Lucas Heights in the years 1972-1980, ''The Australian & New Zealand Physicist'' '''33''' (3-4), 53-58 (1997).</ref>
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==Laser isotope separation==
==Laser isotope separation==


Pryor conducted research on [[molecular laser isotope separation|laser isotope separation]] using infrared lasers.<ref name=LIS1 /><ref name=LIS2 /><ref name=AWP /> Also, earlier work in this area brought
Pryor conducted research on [[laser isotope separation]] using infrared lasers<ref name=LIS1 /><ref name=LIS2 /><ref name=AWP /> and he provides one of the very few historical accounts of laser isotope separation efforts in Australia (during the early 1980s) that included both visible and infrared laser sources (relevant to [[Atomic vapor laser isotope separation|AVLIS]] and [[Molecular laser isotope separation|MLIS]], respectively).<ref name=AWP /> In this regard, he refers to the reluctance of the Australian authorities, to adopt laser isotope separation, with the sentence... "''the cautious hand refrained''".<ref name=AWP /><ref name=LP>[[F. J. Duarte]], [http://www.opticsjournal.com/laserphysicist.htm ''Laser Physicist'' (Optics Journal, New York, 2012) pp. 160-161.]</ref>
him in contact with [[John Clive Ward|J. C. Ward]] who advocated a phase transition transformation of UF<sub>6</sub> known as the ''Ward process''.<ref name=AWP /> Pryor provides a unique historical account on laser isotope separation efforts in Australia (during the early 1980s) that included both visible and infrared laser sources (relevant to [[Atomic vapor laser isotope separation|AVLIS]] and [[Molecular laser isotope separation|MLIS]], respectively).<ref name=AWP /> In this regard, he refers to the reluctance of the Australian authorities, to adopt laser isotope separation, with the sentence... "''but the cautious hand refrained''".<ref name=AWP /><ref name=LP>[[F. J. Duarte]], [http://www.opticsjournal.com/laserphysicist.htm ''Laser Physicist'' (Optics Journal, New York, 2012) pp. 160-161.]</ref> Pryor's account was independently corroborated, albeit with a time lag, by other researchers in the field.<ref>F. J. Duarte, Tunable lasers for atomic vapor laser isotope separation: the Australian contribution, ''Australian Physics'' '''47''' (2), 38-40 (2010).</ref>


==Philosophy==
==Philosophy==


Later in his career, Pryor was interested on historical and philosophical aspects of science and physics. He authored various broadcast recordings on this subject matter which were broadcast in 2SER-FM in the 1980-1983 period.<ref>A. W. Pryor, The Oppenheimer case (2SER-FM, August 1980).</ref><ref>A. W. Pryor, Lysenko-science and politics (2SER-FM, March 1981).</ref><ref>A. W. Pryor, Physics and faith (2SER-FM, July–September 1982).</ref><ref>A. W. Pryor, Record century: one hundred years of recorded sound (2SER-FM, March 1983).</ref>
Later in his career, Pryor was interested on historical and philosophical aspects of science and physics. He authored various broadcast recordings on this subject matter which were broadcasted in 2SER-FM in the 1980-1983 period.<ref>A. W. Pryor, The Oppenheimer case (2SER-FM, August 1980).</ref><ref>A. W. Pryor, Lysenko-science and politics (2SER-FM, March 1981).</ref><ref>A. W. Pryor, Physics and faith (2SER-FM, July–September 1982).</ref><ref>A. W. Pryor, Record century: one hundred years of recorded sound (2SER-FM, March 1983).</ref>


==Career==
==Career==

Revision as of 17:46, 15 September 2014

A. W. Pryor
Born1928
DiedSeptember, 2014
Sydney
NationalityAustralian
Alma materUniversity of Queensland
Durham University
Known forCrystalography
Neutron diffraction
Molecular laser isotope separation
Scientific career
FieldsCrystallography
InstitutionsAustralian Atomic Energy Commission
Macquarie University


Arthur William Pryor (1928 – 6 September 2014) was an Australian physicist known for his contributions to neutron diffraction[1][2] and infrared laser isotope separation.[3][4][5] Pryor authored and co-authored a number of well regarded papers in the field of crystallography[6][7][8][9] and he also co-authored, with B. T. M. Willis, the well-known book Thermal Vibrations in Crystallography.[10]

Laser isotope separation

Pryor conducted research on laser isotope separation using infrared lasers.[3][4][5] Also, earlier work in this area brought him in contact with J. C. Ward who advocated a phase transition transformation of UF6 known as the Ward process.[5] Pryor provides a unique historical account on laser isotope separation efforts in Australia (during the early 1980s) that included both visible and infrared laser sources (relevant to AVLIS and MLIS, respectively).[5] In this regard, he refers to the reluctance of the Australian authorities, to adopt laser isotope separation, with the sentence... "but the cautious hand refrained".[5][11] Pryor's account was independently corroborated, albeit with a time lag, by other researchers in the field.[12]

Philosophy

Later in his career, Pryor was interested on historical and philosophical aspects of science and physics. He authored various broadcast recordings on this subject matter which were broadcasted in 2SER-FM in the 1980-1983 period.[13][14][15][16]

Career

Pryor was educated at the University of Queensland and completed his doctoral studies at Durham University. Pryor spent most of his career at Lucas Heights (as a scientist in the former Australian Atomic Energy Commission) and was a faculty visiting fellow at Macquarie University where he lectured on atomic physics.[11] He was a Fellow of the Australian Institute of Physics.

He died at the age of 86, on 6 September 2014.[17][18]

References

  1. ^ R. S. Seymour and A. W. Pryor, Neutron diffraction study of NH4Br and NH4I, Acta Cryst. B 26, 1487-1491 (1970).
  2. ^ G. L. Paul and A. W. Pryor, The study of sodium nitrate by neutron diffraction, Acta Cryst. B 27, 2700-2702 (1971).
  3. ^ a b J.E. Eberhardt, D.A. Johnson, R.B. Knott, A.W. Pryor, A.B. Waugh,Multiphoton dissociation of two vanadyl compounds, Chem. Phys. Lett. 93, 448-452 (1982).
  4. ^ a b J.E. Eberhardt, I.E. Hoare, D.A. Johnson, R.B. Knott, A.W. Pryor, A.B. Waugh, Multiphoton dissociation of some volatile uranyl complexes. I. The phenomena of reversible and permanent dissociation, Chem. Phys. 72, 41-49 (1982).
  5. ^ a b c d e A. W. Pryor, Personal memories of two advanced uranium enrichment projects at Lucas Heights in the years 1972-1980, The Australian & New Zealand Physicist 33 (3-4), 53-58 (1997).
  6. ^ A. W. Pryor, Debye-Waller factors in crystals of the sodium chloride structure, Acta Cryst. 20, 138-140 (1966).
  7. ^ M. M. Elcombe and A. W. Pryor, The lattice dynamics of calcium fluoride, J. Phys. C Solid State Phys. 3, 492 (1970).
  8. ^ A. W. Pryor and P. L. Sanger, Collection and interpretation of neutron diffraction measurements on urea, Acta Cryst. A 26, 543-558 (1970).
  9. ^ K. D. Rouse, B. T. M. Willis and A. W. Pryor, Anharmonic contributions to the Debye-Waller factors of UO2, Acta Cryst. B 24, 117-122 (1970).
  10. ^ B. T. M. Willis and A. W. Pryor, Thermal Vibrations in Crystallography (Cambridge University, Cambridge, 1975).
  11. ^ a b F. J. Duarte, Laser Physicist (Optics Journal, New York, 2012) pp. 160-161.
  12. ^ F. J. Duarte, Tunable lasers for atomic vapor laser isotope separation: the Australian contribution, Australian Physics 47 (2), 38-40 (2010).
  13. ^ A. W. Pryor, The Oppenheimer case (2SER-FM, August 1980).
  14. ^ A. W. Pryor, Lysenko-science and politics (2SER-FM, March 1981).
  15. ^ A. W. Pryor, Physics and faith (2SER-FM, July–September 1982).
  16. ^ A. W. Pryor, Record century: one hundred years of recorded sound (2SER-FM, March 1983).
  17. ^ "Arthur PRYOR". Retrieved 11 September 2014. PRYOR, Arthur William.Family and friends of Arthur (Tom), are warmly invited to attend his Funeral Service to be held at Northern Suburbs Crematorium, 199 Delhi Road, North Ryde on Wednesday, September 10, 2014 at 10-30 a.m. in the East Chapel.
  18. ^ The Sydney Morning Herald, September 6, 2014.

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