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DNP Newsletter No. 96 November 1993 TO: Members of the Division of Nuclear Physics, APS FROM: Virginia R. Brown, LLNL - Secretary-Treasurer, DNP ACCOMPANYING THIS NEWSLETTER: conjunction with the APS general meeting in Crystal City, VA, 18-22 April 1994. Carl • A ballot and brief biographies of DNP B. Dover will become Chair, Noemie Candidates Benczer-Koller will become Past-Chair, and • A Bonner Prize Fund Donation Form Susan J. Seestrom, Brian D. Serot, and Future Deadlines Stephen J. Wallace will remain members of the Executive Committee. A Chair-Elect, 1 9 9 3 - 9 4 Vice-Chair, Secretary-Treasurer, and three members of the Executive Committee are to DNP be elected before April 1994. Compliance with the new DNP Bylaws • 8 Dec. 1993 - Invited abstracts to requires a Division with the governance Carl B. Dover sequence of Vice-Chair, Chair-Elect, Chair, • 7 Jan. 1994 - Last Day for and Past-Chair. The introduction of the Abstracts to Chair-Elect position on the enclosed ballot College Park, MD, is a one-time election of this position. The APS Office For elected Chair-Elect will serve as Chair in Spring Meeting 1995 and Past-Chair in 1996. The Vice- (See Item 3) Chair will serve through the complete • 14 Jan. 1994 - DNP Election governance sequence. Ballot • 1 Apr. 1994 - Nominations for This year's Nominating Committee APS Fellowship consists of T. J. Bowles (Chair), J. A. (See Item 8) Cizewski, G. T. Garvey, and S. E. Koonin. The candidates selected by the Nominating Committee are as follows: 1. ELECTION OF OFFICERS AND EXECUTIVE COMMITTEE FOR 1994 Chair-Elect, (one position) The terms of the officers and three members of the present Executive Walter F. Henning, ANL Committee will expire at the close of the John D. Walecka, CEBAF regular meeting of the Division to be held in Vice-Chair, (one position) Executive Committee is pleased to Robert D. McKeown, California Inst. acknowledge the hard work and careful of Technology planning of the Local Committee consisting Lee L. Riedinger, Univ. of Tennessee of J. A. Becker (LLNL), V. R. Brown (LLNL), D. Cebra (U. C. Davis), K. Lesko (LBL), Secretary-Treasurer M. Nitschke (LBL), with special thanks to G. J. Wozniak (Chair) for his very important Virginia R. Brown, LLNL contributions to the success of this meeting. The DNP is also grateful for the invaluable Executive Committee (three positions) contributions from the Local Conference Coordinator, Mollie Field and her assistant, A. Baha Balantekin, Univ. of Del Thomas, both from Lawrence Berkeley Wisconsin, Madison Laboratory, who worked for twelve months Elizabeth J. Beise, Univ. of Maryland preparing for the meeting. At Asilomar, at College Park they were assisted at the registration desk R. Russell Betts, ANL by their colleagues, K. Balder-Froid, Berndt Mueller, Duke University T. Kirksey, and B. Phillips from LBL and K. Johanna Stachel, SUNY at Stony Pangelina from LLNL. Brook Glenn R. Young, ORNL Meeting Program The enclosed ballot must be signed The meeting consisted of six sessions and may be returned in the enclosed of invited papers, one of which was a envelope with your name and address plenary session, and 351 contributed papers printed or signed legibly in the upper left divided into 31 sessions. The main meeting hand corner of the envelope. It must be opened on Thursday morning with the received by Virginia R. Brown on or before DNP Plenary Session on the "Future of 14 January 1994 in order to be counted. Nuclear Physics: Federal Support, Applications, and New Directions." The Plenary Session is If you are a DNP member, please described below. The other invited sessions exercise your right to vote for candidates in "Hadron Structure at Intermediate and High the upcoming DNP elections. Typically Energy", "Topics in Heavy-Ion Physics", only about 900 election ballots are mailed in "Radioactive Nuclear Beams", "Intermediate by members. Your vote counts, and it is Energy Reactions, Spin and Symmetries in important! Nuclei", and "Relativistic Heavy-Ion Physics" were all well attended as were the various contributed sessions. 2. REPORT ON THE DNP FALL MEETING AT ASILOMAR Plenary Session CONFERENCE CENTER IN PACIFIC GROVE, CA, 20-23 OCTOBER 1993 The Plenary Session, "Basic Nuclear A well attended and highly successful Physics: Funding, Applications, Future DNP meeting was held at Asilomar, CA Directions", took place Thursday morning with over 600 registered attendees and before a full house. The theme was in tune many guests. The weather was sunny and with the presentations of previous years, mild for the entire week. The exciting focussing on basic nuclear physics, the science and the pleasant ambiance of future of the field, and its intersection with Asilomar facilitated many informal societal concerns. discussions beneath the cypress trees, out on the sand dunes, and on the beach. On Robert Eisenstein, Director of the behalf of the membership, the DNP Physics Division at the NSF, opened the Session with a brief overview of the lensing effect as it passed behind a Foundation Budget and of the supposed "massive compact halo object" programmatic activities of the physics (MACHO) located in our Galaxy. The most division. Expanding on the theme "The probable lens mass inferred from the Times, They Are a'Changin'", he discussed duration of the event is one tenth of a solar the radically different position of the U.S. in mass. The experiment produced a wealth of the world today, compared to the recent data on other questions of deep interest and past, as well as many of the internal may lead to the identification of thousands problems that our nation is facing. These of new quasars. Recent accounts of this include matters such as the faltering work have been published in the New York economy and our failing educational Times and Nature. system. He reviewed the political scene in Washington in this context, and R. L. Brodzinski from Battelle, Pacific emphasized the necessity for establishing Northwest Laboratory, in his talk "Applying better links between the Academy, Business High Energy Physics Instrumentation to and Government, and for communicating in Environmental Restoration" described how a much improved fashion with the public. instrumentation developed for nuclear and high energy physics experiments is today He also stressed the need for widely used in environmental restoration significantly increased contributions by the projects. As examples, he showed how track scientific community towards helping the chambers designed for detection of very nation solve its problems. Nuclear high energy events have been adapted to the physicists are a creative group which has clean up of uranium contaminated soils evolved with the times in the last 25 years, while instrumentation developed for and it will continue to follow the most neutrinoless double beta decay experiments promising intellectual questions. We have were used to measure fallout from nuclear produced excellent science and excellent weapons testing. training of young people, which is the essence of technology transfer. In D. F. Geesaman of Argonne National Eisenstein's words, "The future is very Laboratory closed the session with a promising, but it will not be handed over to discussion of the future of hadron physics us. Each of us must invest in the future in in his talk "Nuclear Physics at Multi-GeV order to share in it." Hadron Facilities." He described the present understanding of the quark structure of C. Alcock from Lawrence Livermore nuclei and the applications of Quantum National Laboratory spoke on the question Chromodynamic to many-body systems. of "Baryonic Dark Matter?". Alcock and his Geesaman presented arguments strongly in collaborators have been the focus of favor of the timely construction of a multi- considerable excitement from the scientific GeV hadron facility. community and the general public with their spectacular recent measurement of Workshops gravitational lensing, where the image of an object such as a star in a nearby galaxy Three workshops were held prior to might be distorted by the gravitational and in conjunction with the DNP meeting. influence of unseen dark matter lying Highlights of these workshops are between us and the star. Alcock, in an described below. exceptionally fine talk, described the measurement of one candidate star out of Workshop A: "Physics Opportunities with millions recorded in the Large Magellanic Large Ge Detector Arrays; Present and Cloud, whose apparent brightness increase Future", J. A. Becker could be attributed to the gravitational Approximately one hundred and ten and VUU; Molecular dynamics was seen scientists registered for this one-day to have some advantages over one-body workshop to discuss the first phases of large transport codes in modeling Ge detector arrays, which are operating and fragmentation because the transport codes producing exciting physics results. The contain no fluctuations. Experimental workshop emphasized results obtained results from GANIL and MSU have with these arrays, provided a contrast with indicated the need to include expansion in results obtained with earlier detector arrays, the modeling of nuclear disassembly. and suggested what the future might hold This argument was supported by the in terms of detector arrays. Topics success of a new statistical model which discussed included experimental results explicitly includes the effects of expansion and analyses of accelerator based of the system through internal heating experiments on superdeformation in the A from the excitation energy and from the = 135, 150, and 190 mass regions, newly inertial recoil. The recent miniball results discovered oblate bands in neutron- from MSU have also pointed towards the deficient Pb, and correlation and fluctuation use of fragment-fragment correlations in analyses. The power of these arrays for the order to determine the timescale of the study of prompt gamma-rays from fission, breakup process - a key element in the producing information on neutron-rich identification of a simultaneous nuclei, was illustrated.