Berkeley, California



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Place: Berkeley, California
Element: Technetium, Astatine (also, neptunium, plutonium, and other transuranium elements)
Scientist: Corson, Segrè, McMillan, Abelson

The Golden Gate Bridge

The Lawrence Hall of Science

terrace in front

view of the San Francisco Bay

entrance to the museum

bust of E. O. Lawrence

an early cyclotron

The Nobel Prize

development of cyclotrons

first proto-cyclotron

second proto-cyclotron

first operational cyclotron

LeConte Hall

11-inch cyclotron

Old Radiation Laboratory

Crocker Hall

cyclotron required this 225-ton magnet

Edwin Macmillan

Portrait of Abelson

the 60-inch cyclotron

Glenn Seaborg and Albert Ghiorso

the 37-inch magnet

first sample of plutonium-239

down the slopes of the Berkeley Hills

Sather Tower

base of the Campanile

streets have been relocated

map of the Berkeley campus

only recognizable feature ...

1919 aerial view

Gilman Hall

1931 aerial photo

1931 LeConte Hall

1942 map with Crocker Hall

Crocker Hall was built in 1937

aerial view of the campus in 1940

The Chemistry buildings

photo dated early 1940s

Freshman chemistry laboratory, etc.

aerial view during the 1940s

photo is displayed

Berkeley campus in 1963

The entrance to the new site

Berkeley campus in 1971

Crocker Hall is now gone

Berkeley campus in 1996

184-inch cyclotron site

One minute's walk north

"Old LeConte Hall" remodeled

the main entrance

the third floor in Old LeConte Hall

first operational cyclotrons

From these beginnings...

initial development

classroom for beginning physics classes

the view looking southward

Exiting from Old LeConte

east side of Old LeConte

slightly different vantage point

from the south end.

Walking northward

Rotating to the right

Gilman Hall

The actual exterior plaque

Closer view of the door

Closeup of the entrance

National Historic Chemical Landmark

Inside Gilman Hall


On the third floor

Plutonium was discovered

This laboratory is important

Seaborg's discovery of plutonium

The isolation and purification of plutonium

an important laboratory

Seaborg visiting 307 Gilman

right side of the laboratory

north of New LeConte Hall

New LeConte Hall

Latimer Hall

north of University Drive

Lawrence Berkeley [Radiation] National Laboratory

From Cyclotron Road

turn on McMillan Road

Our goal is Building 71A

a shaded corner

Our reserved parking place

an honor to be accommodated

Walking from Seaborg's Glen

Al Ghiorso (left) with the author

2003 Guinness World Records

Ghiorso should also be credited with element 110

Al Ghiorso tells an engrossing story

The HILAC was used to synthesize 102

Actually, 99 (einsteium) and 100 (fermium)

For elements beyond 100

A hypothesis of the nuclear physicist

A special dream of Ghiorso

Fermium (atomic number 100)

Ghiorso was still engaged in research

room is named after Ghiorso

Albert Ghiorso Conference Room

the HILAC which synthesized elements beyond 100

Closeup of the HILAC

where Seaborg's office was located

Building 70A, on Seaborg Road.

Inside Building 70A

Seaborg in front of the Periodic Table in 1995

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Copyright ©2018, Dr. James L. Marshall and Virginia R. Marshall
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