WikiSysop at 22:53, 1 September 2022

2022-09-01T22:53:30Z

WikiSysop: Created page with "I first met Ken Crowe in the spring of 1972, if memory serves. I had just joined the the UBC Chemistry Dept. in July 1971, drawn by the construction then underway of the TRIUM..."

2022-09-01T22:40:55Z

Created page with "I first met Ken Crowe in the spring of 1972, if memory serves. I had just joined the the UBC Chemistry Dept. in July 1971, drawn by the construction then underway of the TRIUM..."

New page

I first met Ken Crowe in the spring of 1972,
if memory serves. I had just joined the
the UBC Chemistry Dept. in July 1971,
drawn by the construction then underway
of the TRIUMF cyclotron. I arrived from
the Niels Bohr Institute with an interest
in nuclear reactions and nuclear structure
physics, the subject also of my PhD thesis
in Nuclear Chemistry from UC Berkeley. A
chance phone call from my former PhD supervisor (Joe Cerny) caused me to radically
change direction.

Joe told me that he had just attended
a seminar given by Ken Crowe on the subject of "Muonium Chemistry". It sounded
intriguing so I called Ken and went down to
meet him. I was ushered into his office by
the comely Corrine. That was my first impression of Ken, good taste in secretaries!
My next one was that he was used to being in charge but at the same time I found
his enthusiasm about this developing new
field of muonium chemistry and his high
praise for his grad student who was carrying the ball at the time, Jess Brewer, infectious. I "signed on" for the long haul. Jess
was putting literally half-liter Mylar buckets of solutions of different reagents in the
backward muon beam at the old 184" and
measuring muon spin relaxation rates in order to determine chemical rate constants for
Mu, the lightest H atom; it was a bit crude
but it was a start, and led to some early
papers in the field, co-authored with Fredy
Gygax, who was a PDF (from "SIN") in
Ken’s group at the time.

After his PhD, Jess spent a year or so as
a PDF with Ted Bowen, Burt Pifer and the Arizona group, developing "Arizona muons" (later called
"surface muons"). As an item of historical graffiti, we all did the last non-medical experiments at the old 184", the first studies of Mu reactivity in low pressure gases.

Jess then came to UBC, first to the Chemistry Dept., drawn both by TRIUMF and the steelhead fishing in BC, and he, I and my first grad student, Dave Garner (who also contributed at the 184") got µSR started at TRIUMF on the old (and recently dismantled) M20 beam line. Money was tight (it still is) and we had to beg and borrow what we needed to get operational. Ken Crowe once again entered the picture and played a huge role in lending a helping hand. He procured about 25 (yellow) quads for us from the decay (Anderson?) muon channel of the old Chicago synchrocyclotron (some of which are still in use on the M15 beam line), a bending magnet from Cal Tech (the first bender was a dipole magnet "Patty Jane" from Harvard, which David Measday of UBC Physics arranged for us) and two huge old (selenium rectifier) power supplies from the Bevatron at Berkeley. It all arrived at TRIUMF one summer day in 1974 and two years later we were operational, with help from Toshi Yamazaki and Ken Nagamine as well, who were spending time at TRIUMF then.

The first µSR spectrum taken in Canada was recorded (on polaroid!) in July 1976. Today µSR at TRIUMF is an integral part of the new "CMMS" (Centre for Molecular and Materials Science), along with beta-NMR at ISAC, but likely neither would have come to pass without Ken Crowe's initial interest and the huge help he provided. It may sound inadequate but does bear repeating: "Thanks, Ken!" in gratitude. Until we meet again.

<center>
[[File:1stMuSR.jpg|center|frame|First µSR in Canada: 11 July 1975]]
</center>

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 <center>
-[[File:1stMuSR.jpg|center|frame|First &micro;SR in Canada: 11 July 1975]]
+[[File:1stmsr75.jpg|center|frame|First &micro;SR histogram in Canada: 11 July 1975 with Don Fleming, Toshi Yamazaki, Ken Nagamine and Jess Brewer]]
 </center>

Don Fleming's memories of Ken Crowe - Revision history

WikiSysop at 22:53, 1 September 2022

WikiSysop: Created page with "I first met Ken Crowe in the spring of 1972, if memory serves. I had just joined the the UBC Chemistry Dept. in July 1971, drawn by the construction then underway of the TRIUM..."