GROUP MEETING
 GN01-07 March31, 2001
To:
Florescu, LaJohn, Obolensky
There will be a group meeting FRIDAY April 13, noon, 216AH.

Note room and time.
(Future dates: Sa Apr 28(2pm), Fr May 4(3pm), Th May 10,
                           Fr June 8(3pm), ?Fr June 22?, Fr June 29(3pm).
Social Hour Th May 10.
1 Organizational Issues a
Appointments, next meeting, other meetings, lectures
    b Computer issues, theses, finances, telephone

 
2 Meetings
Place
 Date
       
  ECAMP7 Berlin, GE April 2-6
  APS Washington, DC Apr 23-27
  DAMOP London, ONT May 16-19
  GC-Atomic Physics Williams Col, MA June 17-22
  GC-photoions, ioniz, ,detach Williams Col, MA July 8-13
  ICPEAC Sante Fe, NM July 18-24
  GC-x-ray physics Conn Col July 21-26
  VUV Trieste, Italy July 23-27
  e,2e dbl photo St. Louis, MO Jul 26-28

 
3 Deadlines  
     
  Abstracts  
  Manuscripts  
  Registration DAMOP (April 1), ICPEAC (May 1)

 
4 Travels, Visitors
     
  Travel  
  Arrivals Avdonina (cMay 12),
Kashenock (c June 1)
  Departures Avdonina (May 28),
Florescu (May 12),
Obolensky (Aug 14)
  Visits Avdonina (May c 12-28, Aug?),
Suric Jul/Aug),
V Florescu (Sept/Oct),
Dondera (?c May 14- June 10?), Kashenock (cJune 1 - Dec 02),
Solovyov (July?),
Korol (?Sept-Oct?)
  RHP Pitt DC Travel  
           
  Apr -1 2-12    
    13-16 17-26    
    27-29 30-3    
  May 4-6 7-8    
    9-13 14-15 16-19 London, Ont
    23 20-22 24-3 Exeter, London, Zagreb, Frankft?
  June 4 5-7    
    8-11   12-16 ?St. Ptsbg, Frkft?
    17 18-20?    
    ?21-24? 25-27?    
  July 28-1 2-3? 4-7? Ithaca NY ?
    13-16? 8-12 17-25 Sante Fe, NM
  Aug 3-5 26-2    
    10-12 6-9    

 
5 Manuscripts
     
  502 "High energy limit of photon-atom interactions: example of double ionization of He by photoabsorption", R. H. Pratt, E. G. Drukarev, and T. Suric, in Frontiers in Physics 1998, Ed. S. P. Chia and D. A. Bradley, World Scientific (Singapore) 2000, pp 125-132.
  519 "Existence of near-minima in elastic photon-atom scattering", J. P. J. Carney and R. H. Pratt, for publication in J. Rad. Phys. Chem.
  520 "Circumstances in which radiation is not absorbed, forbidding photoionization: Four classes of matrix element zeroes", L. A. LaJohn and R. H. Pratt, for publication in J. Rad. Phys. Chem.
  521 "Ionization of an atom by photoabsorption at high photon energies: Unified view in terms of singularities of the Coulombic potential", T. Suric and R. H. Pratt, for publication in J. Rad. Phys. Chem.
  523 "Understanding the importance of dynamic, correlation, and exchange effects in new low-energy photon scattering experiments", J. P. J. Carney and R. H. Pratt, for publication in AIP Proceedings (CAARI).
  524 "Structures in the energy dependence of classical and quantum bremsstrahlung", A. Florescu, O. I. Obolensky, C. D. Shaffer, and R. H. Pratt, for publication in AIP Proceedings (CAARI).
  525 "The approach to asymptotic behavior in photoionization", R. H. Pratt and T. Suric. For publication in Journal Chinese Chemical Society
  526 "Corrections to the usual scattering factors for total x-ray scattering in rare gas atoms: experiment and theory", L. Young, R. W. Dunford, E. P. Kantor, B. Krassig, S. H. Southworth, R. A. Bonham, P. Lykos, C, Morong, A. Timm, J. P. J. Carney, and R. H. Pratt, accepted for Phys. Rev. A.

 
6 Funding
  Pittsburgh Proposals
  Pittsburgh Awards
       
  NSF 9970293   ?7/1/99-
  Other Awards
  Due Dates
   
  April 1 NSF annual report

 
 
7 Recent Preprints
       
8 Recent Papers
       
9 Review of Literature:
       
  a Pratt "Compton scattering by nuclei", Phys.Rpts 323, 457 (Jan 00), Hutt, L'vov, Milstein, Schumacher
  b Pratt "Theory of two electron atoms: between ground state & complete fragmentation", RMP 72, 467 (April 00) Tannet, Richter, Rust
  c Pratt "Electron-electron Thomas peak in fast transfer ionization", PRA 62, -32711 (Sept 00) Tolmanov & McGuire
  d LaJohn "Exact relativistic calculation with retardation of hydrogenic photoeffect matrix elements:", FoundPhys 30, 1283 (Aug 00), Boudet & Blaive
  e Pratt (gamma, 2e) in He - practical parametrization of triple differential cross section", JPB 33, 4691 (Nov 14 00), Cvejanovic & Reddish
  f Pratt "Absolute differential cross sections for photo double ionization of he from hyperspherical R matrix method", PRL 85, 4450 (Nov 20 00), Malegat, Selles, Kazonsky
  g Florescu "Thomas mechanism in electron capture to the continuum", PRA 62, 062716 (Dec 00), Rodriguez & Barachina
  h Pratt "High energy limit of the double-electron photoionization cross section of the helium atom", PRA 62, 064701 (Dec 00), Krivec, Amusia, & Mandelzweig
  i Obolensky "Experimental demonstration of three mutually orthogonal polarization states of entangled photons", PRL 85, 5013 (Dec 11 00), Tsegaye et al
  j LaJohn "Classical form factor for transitions in the hydrogen atom", PLA 277, 223(Dec 4 00) Bersons, Kulsh, Veilande
  k Suric "Half collision model for triple photoionization of lithium", PRA 63. 020701 (Feb 01), Pattard & Burgdorfer
  l LaJohn "Strong nondipole effects in low-energy photoionization of Xe", PRA 63, 022504 (Feb 01), Johnson & Cheng
  m LaJohn, Pratt "Large nondipole parameters with strong correlation effects in keV photoelectron angular distributions", PRA 63, 022704 (Feb 01)
  n Avdonina "Minima & maxima in GOS", JPB 33, 5397 (Dec 14 00) Chen &Msezane
  o Florescu, Obolensky "Treatment of Coulomb singularity in momentum space calculations", CopPhysComm 134, 317 (Mar 2001) Ivanov & Mitroy
  p Florescu & Obolensky "Zeroes of scattering amplitude for spin-dependent Gaussian potential", TurkJPhys 25, 87 (2 2001) Hussain, Banu, Halder
  q Obolensky "Destruction of quantum coherence through emission of bremsstrahlung",PRA63, 032102 (March 2001), Breuer & Petruccione
  r Pratt "Bound-free pair production in relativistic heavy ion collisions", PRA 63, 032713 (March 01) Meier et al

 
10 Presentations
       
  May 10 LaJohn, Obolensky DAMOP posters

 
11 Manuscripts in Preparation
     
  a "Polarization correlations for d,f states", Kim, Goldberg, Pratt
  b "Observables in quantum mechanics: creating spin polarization in the absence of spin orbit interactions", Young Soon Kim and R. H. Pratt
  c "Ionization of two-electron atoms by photoabsorption at high photon energies: A view in terms of singularities of the electron-nucleus and electron-electron Coulombic potential", T. Suric, R. H. Pratt and E. G. Drukarev
  d "Multipole decomposition of atomic form factors", L. A. LaJohn and R. H. Pratt
  e "Multichannel coupling and the high energy limit of the photoionization process", E. Drukarev, N. Avdonina, and R. H. Pratt
  * Also considered: bremsstrahlung review (Quarles), Linear response (Florescu), recursion relations (Bronson), semi-relativistic Rayleigh (Costescu, Bergstrom), AFT review (Suric), photoeffect review (Kim)
12 Work in Progress
     
 
Avdonina
 double photoionization, GOS beyond Born & zeroes
  Carney Z-dependence of scattering, scatt in Neon
  Drukarev angular double ioniz, qfm triple & double dist, qfm for ioniz of 2p neon
  A. Florescu classical bremsstrahlung, relativistic zeroes
  V. Florescu retarded & relativistic zeroes
  Kim (YS) retarded zeroes, qm observables
  Lajohn independent information in Rayleigh scattering, bremsstrahlung, rel zeroes
  Suric Compton, double/single in Compton, photo, AFT in scattering

 
13 Code Library
   
  The computers primarily available for use are the group's own Sun UNIX workstations. There is also the VAX system operated by the Computing and Information Systems (CIS) department, but this system tends to have older versions of the codes, and new users will find more help available if they are using the workstations.
  In order to run the codes on local systems, look for executables in the directories:
    UNIX workstations: /usr/local/atomic/bin
    VAX system: USR2:[10104.ATOMIC1.EXE]
  We encourage use of the SLATEC numerical library, which contains a wide variety of numerical algorithms written in FORTRAN. Source code is available in the directories:
    UNIX workstations: /usr/local/atomic/slatec
    VAX system: USR3:[PHY.SLATEC]
  More information is available on the group's web site at:
    http://stribor.phyast.pitt.edu/
  The group has many books available on various operating systems, languages and software, which are kept in 325 OEH (also 327 OEH and 222 Allen). This is also the place to look for hardcopy documentation on the codes.

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