so i learned that i had been right -- or perhaps not

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M y Y ears w ith C harles C oryell: 1950 -1953

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So I learned that I had been right -- or perhaps not. IAEA. Tin Isotopes Identified Tin -132, 133, 134 In Norway But the fission yields not determined. - PowerPoint PPT Presentation

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Page 1: So I learned that I had been right -- or perhaps not

My Years withCharles Coryell:

1950 -1953

Page 2: So I learned that I had been right -- or perhaps not

Students:

Art FairhallHal Richter

Peter DrevinskiPeter Kafalas

DonWiles

Page 3: So I learned that I had been right -- or perhaps not

Later Students:Dick Fink

JackWinchester..............

Page 4: So I learned that I had been right -- or perhaps not

Post Docs:Geoff Wilkinson

Sam SpieglerAlexis Pappas

Tom SugiharaRolf Herber

Page 5: So I learned that I had been right -- or perhaps not

Other Visitors:Pierre Levesque

Jan RydbergJulien Hoste

Florent van GoetsenhovenKaya TonguşAbdur Uppal

Gholi Bazorgan

Harry EmeléusDon M Yost

Page 6: So I learned that I had been right -- or perhaps not

Many Languages in the lab:

Lithuanian Norwegian SwedishGreek Flemish Persian

French Urdu Turkish

Page 7: So I learned that I had been right -- or perhaps not

Exciting Colleagues inother groupsMartin DeutschRobley EvansIsador Amdur

Amos de ShalitJohn Slater

Ying Halpern

Page 8: So I learned that I had been right -- or perhaps not

I was interesting to Robley Evans

Gamma ray energy (keV)

Page 9: So I learned that I had been right -- or perhaps not

My collaboration with the Medical Center

90Sr β 90Y β 90Zr Weak Strong

Y(OH)3

Just add Conc HCl !!

Page 10: So I learned that I had been right -- or perhaps not

My ResearchStemmed from work I had done in Canada

Strategic Error

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135I 135Xe81 135Cs

Pile Poison!!

σ = SECRET x 10 SECRET

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Mass Number80 90 100 110 120 140 150

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Fission yields in U-235: Smooth Curve

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Fission yields in U-235: Thode’s Data

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Fission yields in U-235: Glendenin’s Ideaneutron boil-off: Depression

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Fission yields in U-235:My data Cs-135: No Depression

Page 16: So I learned that I had been right -- or perhaps not

My hypothesis:

50132Sn82 – Double-magic!

Sn-132 ought to be specially favoured

Leading to a “mirror peak” at about 101, 102

Page 17: So I learned that I had been right -- or perhaps not

Measure the fission yields of

Mo-101, 102Tc-101,102

Ru-103

Page 18: So I learned that I had been right -- or perhaps not

Mass Number80 90 100 110 120 140 150

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Fission Yields in U-235: My Results:The Mirror Peak is there

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So I learned that I had been right

-- or perhaps not.

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IAEA

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Tin Isotopes

Identified Tin -132, 133, 134

In Norway

But the fission yields not determined

Page 22: So I learned that I had been right -- or perhaps not

By Charles’ example:

I learned

Things that cannot be taught.

Page 23: So I learned that I had been right -- or perhaps not

What did I learn under Charles’ care?

Be imaginativeFollow my own intuitionThink and write clearly

Question established ideasNo one tells me how to think

People are interesting

and more

Page 24: So I learned that I had been right -- or perhaps not

Thank you Charles!