My Scientific CareerMy Scientific Career

Art Poskanzer

Harvard '53Harvard '53

1972

Instructor:Richard M. Diamond

LASL 1953LASL 1953

1953

Purified one gram of 241AmMost of the world's supplySeveral curies60 keV radiationBeautiful colors

Columbia '54Columbia '54

Jack MillerDied 1976 at age 54 1954Lucille

MIT '57MIT '57

Thesis in Phys. Chem.: "The Solvent Extraction of Inorganic Complexes"

1970Glenn Seaborg and Charles Coryell

Died in 1971 at age 59

•Nuclear Chem. Gordon Conf. '53

•Postdoc of Linus Pauling

•3 vol. book: Manhattan Project work on fission products

• Students discovered promethium

•Renaissance Man

•Other students:

John Alexander 1/2 yr. before

Mort Kaplan 2 1/2 yr. after

First Paper 1960First Paper 1960A Summary of TTA Extraction Coefficients

Heino Nitsche: still uses itTTA = thenoyltrifluoroacetone

Brookhaven 1957-66Brookhaven 1957-66

Gerhart Friedlander

first mentor

•Spallation of Al and U•Cross sections•Differential studies

•Exotic Nuclei•Beta-delayed proton emitters•Beta-delayed neutron emitters

238U

Z

N

1969

8He8He

1965

10,000 decaysHalf-life to 1%

Berkeley 1966-Berkeley 1966-

1973Earl Hydesecond mentor

1970Lucille Harold Art Deborah Jef

Died 1997 at age 77

•Exotic Nuclei•∆E - E•∆E - E - TOF•Time zero detector

BevatronBevatron

Nz

•Proton - nucleus reactions•Light fragment yields

11Li

11Li11Li

1966

Goran Nyman

98

LAMPF 1968 - 74LAMPF 1968 - 74

Thin Target Area

B

A

Nuclear Chemistry Gordon ConferenceNuclear Chemistry Gordon Conference

•First attended in 1954•Poskanzer Rule•Chair in 1970•Included physicists

1957

Orsay 1970-71Orsay 1970-71

1973

•CERN Proton Synchrotron•On-line mass spectrometer•Direct mass measurements•New region of deformation

Robert Klapisch

NAS Panel 1976NAS Panel 1976

Friedlander Panel on the Future of Nuclear Science

Dirk Walecka Art George Bertsch Bob Stockstad Gery Garvey Harry Gove Herman Feshbach Gerhart Louis Rosen John Schiffer

1976

American Chemical SocietyAmerican Chemical Society

1980

•Div. Nucl. Chem. & Tech.•Chair 1977•Nucl. Chem. Award 1980

Scientific AmericanScientific American

Jef Poskanzer 1978

Exotic Light Nuclei

with Joe Cerny

NuclidesNuclides

Proved not to exist:16B

13Be

12Li10Li 5H

Discovered:

227Fr

228Fr

145Cs

146Cs

98Sr

99Rb

41Ti

37Ca

51K

50K

49K

48K

33Ar

39P

34Al

32Mg

31Mg

33Na

32Na

27Ne

13O

17C

17B

15B

14B

14Be

12Be

11Li

First observed decay:

145Cs ß

146Cs ß

98Sr ß

99Rb ß

41Ti p

37Ca p

33Ar p

32Na ß

13O p

8He n

First mass measurement:

32Na

31Na

30Na

29Na

28Na

27Na

11Li

Bevalac 1975 - 93Bevalac 1975 - 93

•GSI-LBL Collaboration•July 1974

•Central Collisions•Fireball model•Coalescence

•Users' Association 1973 •Seminars 1975•Scientific Proposal 1975•Summer Study 1978•Scientific Director 1978 - 79

Plastic Ball 1980 - 90Plastic Ball 1980 - 90

•Collective Flow•Squeeze-out

1983 Herbert Loehner Hans-Ake Gustafsson Bernhard Ludewigt Hans Gutbrod me Tim Renner Tony Warwick Karl-Heinz KampertHans-Georg Ritter Mohan Doss Howard Wieman Burhard Kolb

Others:Per KristanssonMichael MaierHubertus RiedeselRainer SchickerRudi SchmidtHelmuth SpielerFriedeman Weik

CERNCERN

ISOLDE 1979 - 80WA80 1986 - 87NA49 1995 - 96

WA80 1980 - 90WA80 1980 - 90•CERN HI Program

•PS190 in 1980•RFQ•Mid-rapidity

calorimeters

1987

(NA35) NA49 1991 -(NA35) NA49 1991 -

Peter Seyboth and Reinhart Stock1996

•Electronics funded 1992•Deputy Spokesman 1992 - 98•Directed and Elliptic Flow

RNC Group 1990 - 95RNC Group 1990 - 95

1990

•Formed 5 Feb 90

James Symons John Harris

STARSTAR

STAR

Art Poskanzer

•Planning starts 1989•LOI 1990•First coll. meet. 1991•Deputy Spokesman 1991-92•Approved 1991•Funded 1993

•First paper 2001•Elliptic Flow

2000

Raimond Snellings Sergei Voloshin

QM’95QM’95

Logo: Harold Poskanzer

Lucille Poskanzer Companion's program

DiscoveryDiscovery

•The feeling of discovery•Great fun•Changed fields often•Summarized results

Restaurant Guide 1980 -Restaurant Guide 1980 -

•Contents: Lucille•Cover: Harold•Production: Art

1985