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Group Title: PROTON
Title: PROTON ; vol. 7 no. 6
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Permanent Link: http://ufdc.ufl.edu/UF00086455/00016
 Material Information
Title: PROTON ; vol. 7 no. 6
Series Title: PROTON
Physical Description: Serial
Language: English
Creator: College of Liberal Arts and Sciences, University of Florida
Publisher: University of Florida
Publication Date: August 2008
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Bibliographic ID: UF00086455
Volume ID: VID00016
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.

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Table of Contents
    Research news
        Page 1
    Faculty attend spring and summer meetings
        Page 2
    Student news
        Page 3
    Around the department
        Page 4
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< PROTON
PHYSICS REPORT ON THINGS OF NOTE


VOLUME 7 NUMBER 6


Research N/Mews
Sun Might Hold
Secret of Dark
Matter
Source Space corn
The identity of the
/rLi mysterious, dark matter
thought to per ade the
uni ers.e has eluded astrophysicists. for decades.
I lo for the first time a team hopes, to look inside
the sun for one of the prime candidates The
in visible stuff called dark matter is thought to make
up as much as :90 percent of the uni ers.e s matter
To date astrophysicists ha e only inferred the
e istence of some mysterious substance b,
Identifying its gra itational effects on isibie matter
such as stars and galaxies IFor instance dark
matter makes gala. es spin faster than other s.e
expected I

T ,o hypothetical particles ha e become the prime
suspects to e* plain the fundamental make-up of
dark matter so-called a.ions and VVIP..F's IVVeaklg
Interacting P.lassi e F'articles i Tens. of teams are
on the hunt for the hea .eight VVI..IF's such as
the G:L-ST team whichh hopes to detect the
gamma ra,'s produced ,hen hypothetically,
VVl..1F's and their antimatter s.el es annihilate each
other l'nlg a handful of groups are searching for
the light ,eight particles called a lons For both
s io ological and technical reasons VVIP,"F' searches
far utnumber a ion ones according to David
Tanner a physicist at the lni ersitl' of Florida and
others For instance he said detectors for VVIPF'Ps
build more on the expertise of mango,
astrophysicists In addition these mnassi e particles
are more fantastical VVlMPFS also impl' things
about supersmnimetr, and e. tra dimension
Tanner told SPF'C.E conm nd so if the, .ere
detected the.' wouldd gi e theorists, lots of ne tos
to plag ,ith and ne ideas to folio ,
Read full article at: http "/ space cornl
s ienceastronomg',00S-I. 17-st-dark-matter html


Physicists tweak quantum force,
reducing barrier to tiny devices
-L'u,'e U.F Jen ll
C '.,mbals don t clash of their 0 n accord in our
...orld ang, ag'

But the quantum worldd is bizarrel, different T .o
metal plates placed almost infinites.imall, close
together spontaneouslyg attract each other

VVhat seems like magic is kno ,n as the C.asmirnr
force and it has been ell-documented in
experiments The cause goes to the heart of
quantum phy'siCs Seemingly. empty' space is not
actually, empty but contains irtual particles
associated ith fluc tuating electromagnetic fields
These particles push the plates from both the
inside and the outside Ho .e er only, virtual
particles of shorter a lengths in the quantum
worldd particles e'ist simultaneously as .a es -
can fit into the space bet ,een the plates so that
the Out ard pressure is slightly smaller than the
in ,ard pressure The result is the plates are
forced together

110 Ini ersit. of Florida physicists ha e found
the. can reduce the C asimir force b., altering the
surface of the plates The disco erCI could pro e
useful as tin, microelectromechanical s.5stems
- so-called ..iE..iS de ices that are already, used
in a .Ide arrag of consumer products bec ome
so small they. are affected by. quantum forces

VVe are not talking about an immediate
application sas Ho Bun Chan an assistant
professor of ph,'sics and the first author of a paper
on the findings that appears in the online edition of
the journal Ph.sical Re ie Letters VVe are
talking about if the de ices continue to be smaller
and smaller as the trend of miniaturization occurs
then the quantum effects could come into play

Read full article at:
http //ne ,s ufl edui/-'000S/0 /14 lquantumin/


Upcoming
Fall 2008
SEMINAR
Schedule

Astrophysics
Friday @ 4:00pm in
Room 2165 NPB

Condensed Matter
Physics
Monday @ 4:05pm
in
Room 2165 NPB

High Energy
Physics
Tuesday @ 2:00pm
and Fridays @
2:00pm in Room
2165 NPB

Physics
Colloquium
Thursday @ 4:05 in
Room 1002 NPB

Quantum Theory
Wednesday @
4:05pm





EDITORS
"lan Clorseg Chair
Pam Marlin


Scientists edge closer to unlocking secrets of mysterious Crab Pulsar
;-'u,'LC F lJ-le 5
Like a celestial top the spinning neutron star kno ,n as the Crab F'ulsar is slo .ing a phenomenon that
astronomers ha e get to full understand 110 researchers ,ith the Laser Interferometer Gra itational
VVa e C',bser ator, Scientific Collaboration an international collaboration headed by. a _Uni ersity of
Florida physicist ha e ruled out one long-hypothesized cause emission of gra itational .a es VVe
can no sa, definite ely, that gra itational ,a es play only a minor role at best in this phenomenon says
David Reitze a LF professor of physics and spokesperson for the collaboration 'L'ur measurements tell
us that no more than 4 percent of the energy loss of the pulsar is caused by the emission of gra itational
.a es Read full article at http /ne ,s ifi ediu/2i008/l. 0 02/crab-p.iis.ar/

3- mtfhiOo14,ne.i.y of 01.rida, G e F a .
P-352-392*0521 F-5-9202 *esis ews -y.uf 0 h-p/wwpy .uf~d


college of
liberal arts a sciences
UF UNIVERSITY of
UF FLORIDA
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THE PROTON Page 2


Symposium on Coupled Cluster Theory
Professor Rod Bartlett was the primary
S organizer of a 5 week workshop at the Institute
of Nuclear Theory, University of Washington,
Seattle, on coupled-cluster theory, June 23- July
25, 2008. The workshop brought together
nuclear physicists, atomic physicists, and
quantum chemists that are all using coupled-
cluster theory (as developed in quantum
chemistry) in their disciplines. In fact, several
nuclear physicists reported on using CCSD,
CCSD[T], CCSDT-1 and EOM-CC in their
applications, all of which were first introduced by Bartlett's group. In
atomic physics the emphasis is on relativistic effects and
particularly the parity violation problem. To get the accuracy
required also demands coupled-cluster theory. Their main tool is
what quantum chemists would call the Fock-Space CC method, as
they want to describe a few electrons outside a core.

During the second week of the meeting, a Symposium on Fifty
years of Coupled-cluster theory was held, honoring three of the
founders, Herman Kuemmel, Jiri Cizek, and Joe Paldus. The
symposium attracted approximately 50 people including UF
speakers, Henk Monkhorst, who gave an invited talk on his idea
to go beyond the Born-Oppenheimer approximation for molecules
with the coupled cluster method, So Hirata, Monika Musial,
Andrew Taube, and Bartlett. In connection with this meeting,
Bartlett was also asked to present a talk on Ab Initio DFT" to
describe how we tie CC theory to DFT in chemistry for the UNEDF
group (Universal Nuclear Energy Density Functional) at Pack
Forest, outside Seattle.



AAPT MEETING

For the national _.PF' T "merican "i locationn of F'hgi.c. Teachersi.
meeting Robert Deserio ,a~. a presenter for the -d anced Lab
VVorkshop held at the I_ni ersit.' of l"berta I'ht.5i sl Department in
Edmonton -lberta Canada The photos ho DeSerio discussing


CLEO CONFERENCE


OPN Talks with.,.
David Reitze
UGO Expert and CLEO/ELS
RGnaIy Speek9r

D E 2.? F

l'[l. ... r -l ,l ,l ""- 1.1111111 :. 11, ,lllll l .>,rq H

Professor David Reitze gave a plenary
presentation on LIGO (Laser Interferometer
Gravitational Wave Observatory) at the 2008
Conference on Lasers and Electro-optics
(CLEO) in San Jose, California on May 5,
2008 which garnered a lot of press.
Approximately 1000 people were in the
audience. The PowerPoint slides and audio of
the plenary presentations can be viewed at
http://www.cleoconference.org/
Conference_Program/plenary.aspx

To read an interview given by Reitze (above
image) to Optics and Photonics News (the
optics world equivalent of Physics Today)
prior to the CLEO meeting please visit
http://www.phys.ufl.edu/publications/
downloads/reitze-interview. pdf


the dynamic light scattering experiment from
PHY4803L advanced physics laboratory with
various attendees and other presenters.


DeSerio pictured far right


Faculty News
Andrew Rinzler has been promoted from the rank of Associate Professor to the rank of Professor,
effective August 16, 2008. Congratulations to Andrew on this well-earned distinction!
_









Page 3 THE PROTON f


Scholarship received for summer
Daniel Pajerowski, a 3rd year graduate student working with
Professor Mark Meisel, received a full scholarship, including
travel and room and board support, to attend the 5th Annual
LANSCE Neutron Scattering School, which focuses on
magnetism in bulk and nanostructured materials as investigated
by neutron elastic and inelastic scattering. The school was held
at Los Alamos National Laboratory in New Mexico from July 23
to August 1, 2008 and was supported by the US Department of
Energy.


Preliminary Exam information
for Fall 2008
The next Preliminary Examination
will be given on:

Thursday, August 21, 2008
o Part A: 9am to 12pm
o Part B: 2pm to 5pm

Friday, August 22, 2008
o Part C: 9am to 12pm
o Part D: 2pm to 5pm

Please meet in 1213 NPB about 15 minutes
prior to the starting time of the examination.
Please bring pencils, calculators, and standard
math tables (if you think you will need them). If
you have any questions, please contact
Professor Khandker Muttalib,
muttalib@phys.ufl.edu. Results of the Prelim
Exam are expected to be known shortly
thereafter.


Darsa Donelan (Massachusetts
College of Liberal Arts)works on the
LISA project under the mentorship of
Prof Guido Mueller


Each summer the Department
of Physics hosts a 10-week
summer research program for
students contemplating
a career in the physical
sciences. Supported by the
National Science Foundation
and UF, the REU program
services 15 undergraduates
per year, drawn to Gainesville
from all over the country.

The Summer 2008 program
included:


Group photo of REU participants


* Mentored research on individual projects (experiment or theory)
* Scientific seminars, lab visits, and communications workshops
* Joint activities with other REU sites UF and the NHMFL
* Social activities on and off campus
* End-of-summer research symposium presented by Site participants
The program also supports follow-up presentation by participants at
local and national scientific meetings.

Peter Lunts (Indiana
University) working in
Prof Mark Meisel's lab


Prof Kevin Ingersent (I) worked with Brian
Friesen (Oklahoma Baptist University)


Ytahmrtr


111el4Wu









-fy THE PROTON Page 4





Newly Constructed Evaporation Chamber
The thermal evaporation chamber integrated with the glove box allows for fabrication of devices using air-sensitive materials
in an inert atmosphere free from oxygen and water. Samples are loaded into the system from the adjacent cleanroom.
Devices to be fabricated will include: light emitting diodes, thin film transistors, and solar cells using novel materials in new
device architectures. -











Mitchell McCarthy, student with Professor
Bill Malphurs, Engineer with the Front view showing the evaporation Andrew Rinzler, is pictured with the
Physics Machine Shop, is pictured chamber enclosed by the glove box. chamber and instrumentation to the right.
Both chamber doors are open allowing line
with the chamber at its earlier of sight view clear through the chamber.
stage IMalphurs assisted in











evaporation source Rear view of the chamber showing the Rear view of the entire system Bottom right
with pneumatic turbo pump on top and feedthroughs for is the purifier (blue box with white door). On
shutter. the ionization gauge (right of turbo pump) top of the purifier is the instrumentation panel
and crystal monitor (left of turbo pump). consisting of the power supply, ionization
Box shaped piece of metal on the left is gauge controller, source selector, turbo pump
the counterweight which allows easy controller and evaporation PID controller.
opening and closing of the door. Between the chamber and the instrumenta-
tion panel is the stainless steel piping and

Physics Demonstrations Used

John Mocko ph.o.lefzI Senior Toeahing Lab
Specpliist ith the Phsl'cs apartmentt t s
recently in oi ed in building some physics -i

Inpjries tht ea r i nsd he th show during t ear ie o the ire r
C ra h s hnati uo p i o trked leeth fto is ifi l o wi w i o .
s thu pe xInstitute o or He eight turo u o of he urfer s he srueao ael
aina~ ~ Research Center Car Crash Test Facility outside
Ruckersville, Virginia. Included in the
Box shaped piec..... experiments he built was the red "brain" (photo
right) in a clear head that showed the acceleration that theroller and evaporation PID controller.
brain goes through during a crash. In addition to copies of the completed film, Mocko will also r
receive high speed footage of the experiments that might be useful for PHY 2053 classes.
Thousands of dollars were spent filming Mocko's experiments. "It was a bit surreal to see some-
thing I built in my garage being used in such a elaborate setting." say Mocko, "Everything worked i
well and the director liked what he saw at the time." Mocko also mentioned that he witnessed a
live car crash where they performed a side impact on a 2009 Ford Flex SUV/Crossover vehicle. It
was hit with a 3,5001b sled car traveling at 31 mph. It was an impressive show. In return for his
services the department will receive a black and white high speed video camera system that
shoots 500 to 3000 frames per second. To see more photos of the movie shoot please visit
http://picasaweb.google. com/John37mnRCMovie?authkey=kBleKWadKg." s M "
http ://picasaweb.google. com/John3 7mNRCMovie ?authkey=k__BleKWadK O. i iI




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