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{{Short description|Australian physicist}}
{{Use Australian English|date=June 2020}}
{{Use dmy dates|date=August 2019}}
{{Infobox scientist
{{Infobox scientist
|name = A. W. Pryor
|name = A. W. Pryor
|image =
|image =
|width =
|width =
|birth_date = 1928
|birth_date = 31 August 1928
|birth_place =
|birth_place =
|nationality = Australian
|nationality = Australian
|death_date = September, 2014
|death_date = {{death-date and age|6 September 2014|31 August 1928}}
|death_place = [[Sydney]]
|death_place = [[Sydney]]
|field = [[Crystallography]]
|field = [[Crystallography]]<br>[[Physics]]
|alma_mater = [[University of Queensland]]<br>[[Durham University]]
|alma_mater = [[University of Queensland]]<br>[[Durham University]]
|doctoral_advisor =
|doctoral_advisor =
Line 14: Line 17:
|work_institutions = [[Australian Atomic Energy Commission]]<br>[[Macquarie University]]
|work_institutions = [[Australian Atomic Energy Commission]]<br>[[Macquarie University]]
|known_for = [[Crystalography]]<br>[[Neutron diffraction]]<br>[[Molecular laser isotope separation]]
|known_for = [[Crystalography]]<br>[[Neutron diffraction]]<br>[[Molecular laser isotope separation]]
|prizes =
|prizes = [[David Syme Research Prize]]
}}
}}
'''Arthur William Pryor''' (31 August 1928 – 6 September 2014) was an Australian physicist known for his contributions to [[neutron diffraction]]<ref>{{cite journal | last1=Seymour | first1=R. S. | last2=Pryor | first2=A. W. | title=Neutron diffraction study of NH<sub>4</sub>Br and NH<sub>4</sub>I | journal=Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry | publisher=International Union of Crystallography (IUCr) | volume=26 | issue=10 | date=1970-10-01 | issn=0567-7408 | doi=10.1107/s0567740870004375 | pages=1487–1491| bibcode=1970AcCrB..26.1487S }}<br>- {{cite journal | last1=Paul | first1=G. L. | last2=Pryor | first2=A. W. | title=The study of sodium nitrate by neutron diffraction | journal=Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry | publisher=International Union of Crystallography (IUCr) | volume=28 | issue=9 | date=1972-09-15 | issn=0567-7408 | doi=10.1107/s0567740872006806 | pages=2700–2702| bibcode=1972AcCrB..28.2700P | s2cid=97693200 }}</ref> and infrared laser [[isotope separation]].<ref name=LIS1-2>{{cite journal | last1=Eberhardt | first1=J.E. | last2=Johnson | first2=D.A. | last3=Knott | first3=R.B. | last4=Pryor | first4=A.W. | last5=Waugh | first5=A.B. | title=Multiphoton dissociation of two vanadyl compounds | journal=Chemical Physics Letters | publisher=Elsevier BV | volume=93 | issue=5 | year=1982 | issn=0009-2614 | doi=10.1016/0009-2614(82)83219-3 | pages=448–452| bibcode=1982CPL....93..448E }}<br>- {{cite journal | last1=Eberhardt | first1=J.E. | last2=Hoare | first2=I.E. | last3=Johnson | first3=D.A. | last4=Knott | first4=R.B. | last5=Pryor | first5=A.W. | last6=Waugh | first6=A.B. | title=Multiphoton dissociation of some volatile uranyl complexes. I. The phenomena of reversible and permanent dissociation | journal=Chemical Physics | publisher=Elsevier BV | volume=72 | issue=1–2 | year=1982 | issn=0301-0104 | doi=10.1016/0301-0104(82)87064-x | pages=41–49| bibcode=1982CP.....72...41E }}</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>

Pryor authored and co-authored a number of papers in the field of crystallography<ref>{{cite journal | last=Pryor | first=A. W. | title=Debye–Waller factors in crystals of the sodium chloride structure | journal=Acta Crystallographica | publisher=International Union of Crystallography (IUCr) | volume=20 | issue=1 | date=1 January 1966 | issn=0365-110X | doi=10.1107/s0365110x66000252 | pages=138–140| bibcode=1966AcCry..20..138P | doi-access=free }}<br>- {{cite journal | last1=Elcombe | first1=M M | last2=Pryor | first2=A W | title=The lattice dynamics of calcium fluoride | journal=Journal of Physics C: Solid State Physics | publisher=IOP Publishing | volume=3 | issue=3 | date=1 March 1970 | issn=0022-3719 | doi=10.1088/0022-3719/3/3/002 | pages=492–499| bibcode=1970JPhC....3..492E }}<br>- {{cite journal | last1=Pryor | first1=A. W. | last2=Sanger | first2=P. L. | title=Collection and interpretation of neutron diffraction measurements on urea | journal=Acta Crystallographica Section A | publisher=International Union of Crystallography (IUCr) | volume=26 | issue=5 | date=1970-09-01 | issn=0567-7394 | doi=10.1107/s0567739470001390 | pages=543–558| bibcode=1970AcCrA..26..543P }}<br>- {{cite journal | last1=Rouse | first1=K. D. | last2=Willis | first2=B. T. M. | last3=Pryor | first3=A. W. | title=Anharmonic contributions to the Debye–Waller factors of UO<sub>2</sub> | journal=Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry | publisher=International Union of Crystallography (IUCr) | volume=24 | issue=1 | date=1968-01-23 | issn=0567-7408 | doi=10.1107/s0567740868001779 | pages=117–122| bibcode=1968AcCrB..24..117R }}</ref> and he also co-authored, with B. T. M. Willis, the book ''Thermal Vibrations in Crystallography''.<ref>{{cite book|first1=B. T. M.|last1=Willis|first2=A. W. |last2=Pryor|url=https://books.google.com/books?id=66yIQgAACAAJ|title=Thermal Vibrations in Crystallography|publisher=Cambridge University Press|location=Cambridge|year=1975|isbn=9780521204477}}</ref>
'''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,
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>
Pryor authored and co-authored a number of well regarded papers in the field of crystallography<ref>A. W. Pryor, Debye-Waller factors in crystals of the sodium chloride structure, ''Acta Cryst.'' '''20''', 138-140 (1966).</ref><ref>M. M. Elcombe and A. W. Pryor, The lattice dynamics of calcium fluoride, ''J. Phys. C Solid State Phys.'' '''3''', 492 (1970).</ref><ref>A. W. Pryor and P. L. Sanger, Collection and interpretation of neutron diffraction measurements on urea, ''Acta Cryst. A'' '''26''', 543-558 (1970).</ref><ref>K. D. Rouse, B. T. M. Willis and A. W. Pryor, Anharmonic contributions to the Debye-Waller factors of UO<sub>2</sub>, ''Acta Cryst. B'' '''24''', 117-122 (1970).</ref> and he also co-authored, with B. T. M. Willis, the well-known book ''Thermal Vibrations in Crystallography''.<ref>
B. T. M. Willis and A. W. Pryor, ''Thermal Vibrations in Crystallography'' (Cambridge University, Cambridge, 1975).</ref>


==Laser isotope separation==
==Laser isotope separation==
⚫
Pryor conducted research on [[molecular laser isotope separation|laser isotope separation]] using infrared lasers.<ref name=LIS1-2/><ref name=AWP /> Earlier work in this area had brought him in contact with [[John Clive Ward|J. C. Ward]] who advocated a new approach to isotope separation based on the phase transition transformation of UF<sub>6</sub> known as the "Ward process".<ref name=AWP /> Pryor provides a unique historical account 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... "but the cautious hand refrained".<ref name=AWP /> Pryor's account was independently corroborated, albeit with a time lag, by other researchers in the field.<ref>{{cite magazine|first=F. J. |last=Duarte|title=Tunable lasers for atomic vapor laser isotope separation: the Australian contribution|magazine=Australian Physics|volume=47|issue=2|pages=38–40|year=2010|url=https://aip.org.au/wp-content/uploads/Australian%20Physics/Aust%20Phys%2047-2.pdf}}</ref>

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
⚫
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.tunablelasers.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 name=LP /><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 wrote various recordings on this subject, which were broadcast on [[2SER]] FM radio in the 1980-1983 period.<ref>A. W. Pryor, "The Oppenheimer case", 2SER-FM, August 1980.<br>- A. W. Pryor, "Lysenko-science and politics", 2SER-FM, March 1981.<br>- A. W. Pryor, "Physics and faith", 2SER-FM, July–September 1982.<br>- 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 recordings on this subject, which were broadcast on 2SER-FM in 1980-1983.<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==
⚫
Pryor was educated at the [[University of Queensland]] and completed his doctoral studies at [[Durham University]]. He spent most of his career at [[Lucas Heights, New South Wales|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.


Pryor was a [[Australian Institute of Physics|Fellow of the Australian Institute of Physics]] and received the 1964 [[David Syme Research Prize]] from the [[University of Melbourne]].
⚫
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, New South Wales|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.<ref name=LP /> He was a [[Australian Institute of Physics|Fellow of the Australian Institute of Physics]].


He died at the age of 86, on 6 September 2014.<ref>{{cite web|title=Arthur PRYOR|url=http://tributes.smh.com.au/obituaries/smh-au/obituary.aspx?n=arthur-pryor&pid=172366864|accessdate=11 September 2014|quote=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.}}</ref><ref>''The Sydney Morning Herald'', September 6, 2014.</ref>
He died at the age of 86, on 6 September 2014.<ref>{{cite web|title=Arthur PRYOR|url=http://tributes.smh.com.au/obituaries/smh-au/obituary.aspx?n=arthur-pryor&pid=172366864|access-date=11 September 2014|quote=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.}}<br>- ''The Sydney Morning Herald'', 6 September 2014.</ref>


==References==
==References==
{{reflist}}
{{reflist}}


{{authority control}}
{{Persondata

| NAME = Pryor, AW
| ALTERNATIVE NAMES =
| SHORT DESCRIPTION = Australian physicist
| DATE OF BIRTH = 1928
| PLACE OF BIRTH =
| DATE OF DEATH = 6 September 2014
| PLACE OF DEATH = Sydney, Australia
}}
{{DEFAULTSORT:Pryor, AW}}
{{DEFAULTSORT:Pryor, AW}}
[[Category:1928 births]]
[[Category:1928 births]]
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[[Category:Laser researchers]]
[[Category:Laser researchers]]
[[Category:Optical physicists]]
[[Category:Optical physicists]]
[[Category:Macquarie University faculty]]
[[Category:Australian broadcasters]]
⚫
[[Category:Academic staff of Macquarie University]]
[[Category:University of Queensland alumni]]
[[Category:University of Queensland alumni]]
⚫
[[Category:Alumni of Durham University]]
[[Category:2014 deaths]]
[[Category:2014 deaths]]
[[Category:Alumni of King's College, Newcastle]]

Latest revision as of 21:34, 15 December 2023

A. W. Pryor
Born31 August 1928
Died6 September 2014 (2014-09-07) (aged 86)
Sydney
NationalityAustralian
Alma materUniversity of Queensland
Durham University
Known forCrystalography
Neutron diffraction
Molecular laser isotope separation
AwardsDavid Syme Research Prize
Scientific career
FieldsCrystallography
Physics
InstitutionsAustralian Atomic Energy Commission
Macquarie University

Arthur William Pryor (31 August 1928 – 6 September 2014) was an Australian physicist known for his contributions to neutron diffraction[1] and infrared laser isotope separation.[2][3] Pryor authored and co-authored a number of papers in the field of crystallography[4] and he also co-authored, with B. T. M. Willis, the book Thermal Vibrations in Crystallography.[5]

Laser isotope separation

[edit]

Pryor conducted research on laser isotope separation using infrared lasers.[2][3] Earlier work in this area had brought him in contact with J. C. Ward who advocated a new approach to isotope separation based on the phase transition transformation of UF6 known as the "Ward process".[3] Pryor provides a unique historical account of laser isotope separation efforts in Australia during the early 1980s that included both visible and infrared laser sources (relevant to AVLIS and MLIS, respectively).[3] 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".[3] Pryor's account was independently corroborated, albeit with a time lag, by other researchers in the field.[6]

Philosophy

[edit]

Later in his career, Pryor was interested on historical and philosophical aspects of science and physics. He wrote various recordings on this subject, which were broadcast on 2SER FM radio in the 1980-1983 period.[7]

Career

[edit]

Pryor was educated at the University of Queensland and completed his doctoral studies at Durham University. He 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.

Pryor was a Fellow of the Australian Institute of Physics and received the 1964 David Syme Research Prize from the University of Melbourne.

He died at the age of 86, on 6 September 2014.[8]

References

[edit]
  1. ^ Seymour, R. S.; Pryor, A. W. (1 October 1970). "Neutron diffraction study of NH4Br and NH4I". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 26 (10). International Union of Crystallography (IUCr): 1487–1491. Bibcode:1970AcCrB..26.1487S. doi:10.1107/s0567740870004375. ISSN 0567-7408.
    - Paul, G. L.; Pryor, A. W. (15 September 1972). "The study of sodium nitrate by neutron diffraction". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 28 (9). International Union of Crystallography (IUCr): 2700–2702. Bibcode:1972AcCrB..28.2700P. doi:10.1107/s0567740872006806. ISSN 0567-7408. S2CID 97693200.
  2. ^ a b Eberhardt, J.E.; Johnson, D.A.; Knott, R.B.; Pryor, A.W.; Waugh, A.B. (1982). "Multiphoton dissociation of two vanadyl compounds". Chemical Physics Letters. 93 (5). Elsevier BV: 448–452. Bibcode:1982CPL....93..448E. doi:10.1016/0009-2614(82)83219-3. ISSN 0009-2614.
    - Eberhardt, J.E.; Hoare, I.E.; Johnson, D.A.; Knott, R.B.; Pryor, A.W.; Waugh, A.B. (1982). "Multiphoton dissociation of some volatile uranyl complexes. I. The phenomena of reversible and permanent dissociation". Chemical Physics. 72 (1–2). Elsevier BV: 41–49. Bibcode:1982CP.....72...41E. doi:10.1016/0301-0104(82)87064-x. ISSN 0301-0104.
  3. ^ 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).
  4. ^ Pryor, A. W. (1 January 1966). "Debye–Waller factors in crystals of the sodium chloride structure". Acta Crystallographica. 20 (1). International Union of Crystallography (IUCr): 138–140. Bibcode:1966AcCry..20..138P. doi:10.1107/s0365110x66000252. ISSN 0365-110X.
    - Elcombe, M M; Pryor, A W (1 March 1970). "The lattice dynamics of calcium fluoride". Journal of Physics C: Solid State Physics. 3 (3). IOP Publishing: 492–499. Bibcode:1970JPhC....3..492E. doi:10.1088/0022-3719/3/3/002. ISSN 0022-3719.
    - Pryor, A. W.; Sanger, P. L. (1 September 1970). "Collection and interpretation of neutron diffraction measurements on urea". Acta Crystallographica Section A. 26 (5). International Union of Crystallography (IUCr): 543–558. Bibcode:1970AcCrA..26..543P. doi:10.1107/s0567739470001390. ISSN 0567-7394.
    - Rouse, K. D.; Willis, B. T. M.; Pryor, A. W. (23 January 1968). "Anharmonic contributions to the Debye–Waller factors of UO2". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 24 (1). International Union of Crystallography (IUCr): 117–122. Bibcode:1968AcCrB..24..117R. doi:10.1107/s0567740868001779. ISSN 0567-7408.
  5. ^ Willis, B. T. M.; Pryor, A. W. (1975). Thermal Vibrations in Crystallography. Cambridge: Cambridge University Press. ISBN 9780521204477.
  6. ^ Duarte, F. J. (2010). "Tunable lasers for atomic vapor laser isotope separation: the Australian contribution" (PDF). Australian Physics. Vol. 47, no. 2. pp. 38–40.
  7. ^ A. W. Pryor, "The Oppenheimer case", 2SER-FM, August 1980.
    - A. W. Pryor, "Lysenko-science and politics", 2SER-FM, March 1981.
    - A. W. Pryor, "Physics and faith", 2SER-FM, July–September 1982.
    - A. W. Pryor, "Record century: one hundred years of recorded sound", 2SER-FM, March 1983.
  8. ^ "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.
    - The Sydney Morning Herald, 6 September 2014.
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