IBR-2 call for proposals
gizo at nfsun1.jinr.dubna.su
Sat Apr 29 11:49:44 CDT 1995
CALL FOR PROPOSALS - Round 95/2 (October 1995 - February 1996)
FRANK LABORATORY OF NEUTRON PHYSICS
JOINT INSTITUTE FOR NUCLEAR RESEARCH
The neutron fast pulsed IBR-2 reactor is resuming operation after
substitution of new movable reflector. A cycle has been
established of 2 weeks of operation for users, each followed by a
one week period for maintenance and machine development. There is
a long shut down period between the end of June and the middle of
October. The main parameters of IBR-2 are following:
Average power 2 MW
Peak power in pulse 1500 MW
Power, released between pulsed 0.1 MW
Pulse repetition rate 5 Hz
Thermal neutron pulse width 320 microsec
Thermal neutron flux density from the surface of the grooved-type
- time average 5x10^13 n/cm^2/sec
- burst maximum 10^16 n/cm^2/sec
Volume of core 22 litres
Coolant liquid sodium
Moderator: water, 300 K, flat and comb-like, cold methane (under
construction) for operations in the range from 20 to 50 K Number
of channels: horizontal - 14, vertical - 2.
Experimental facilities of the IBR-2 are open to the general
scientific community. In this call for proposals, ten instruments
are available for applicants, including:
High resolution Fourier diffractometer (with RTOF analysis of
scattered neutrons) for precise structural analysis of powders.
Time-of-flight diffractometer for investigations of the atomic
structure of single crystals and powders, phase transitions, real
Time-of-flight diffractometer for high-pressure investigations.
Time-of-flight diffractometer for texture and structure
investigations, mainly for pole figure measurements of geological
materials, metals and alloys.
Neutron spectrometer for investigations in pulsed magnetic fields to:
a) study the quasistationary magnetic structures, induced by
b) study the kinetics of first order magnet phase transitions,
induced by pulsed fields;
c) study of dynamics of induced phase state.
Small angle TOF spectrometer for investigation supra-atomic
inhomogeneities on the scale from 10 A to 300 A. Studies of the
structure and dynamics of lipid and biological membranes,
ribosome subparticles, properties of surface-active substances,
hydratation of Portland cements and clinker minerals.
Time-of-flight polarized neutron spectrometer with polarization
analysis of scattered neutrons to conduct micromagnetic
inhomogeneity investigations. Spectrometer can operate as a
reflectometer to study magnetic and superconducting thin films.
The investigations are the micromagnetism of ferromagnetic and
the mixed state of super-conductors, and reflectometry studies of
thin magnetic films.
Multicrystal inverted geometry time-of-flight spectrometer with
medium and high resolution. The NERA spectrometer is intended for
simultaneous measurements of inelastic (INS) and quasielastic
(QNS) neutron scattering spectra to obtain neutron powder
diffraction (NPD) spectra of the sample under investigation. The
main investigations are connected with phase transitions and
molecular dynamics of polymorphic substances.
Time-of flight an inverse geometry spectrometer for simultaneous
measurements of inelastic and elastic scattering. Applications:
phonon states density, molecular spectroscopy, hydrogen in
metals, magnetic excitations and crystal field spectroscopy.
Time-of-flight spectrometer of direct geometry. Applications:
atomic dynamics of quantum and classical liquids, solid
solutions, lattice dynamics of metals and alloys.
If you wish to apply for beam time on an instrument, please
submit a proposal. Proposal forms are included in our mailing for
the call for proposals. Also proposal forms may be obtained by
ftp nfdfn.jinr.dubna.su (IP address: 220.127.116.11)
Password: (give your e-mail address)
binary (or similar command to set transfer mode to binary)
get apf.zip (to get the WinWord 6.0 version file)
or get apfword2.zip (to get the WinWord 2.0 version file)
Proposals must be typewritten in English and fully self-contained
within the proposal, since no additional material will be
transmitted to the experts. If you are worried about missing the
proposal deadline, you may send your proposal by FAX or E-mail.
In this case you should also send us a copy in the mail with an
indication that the proposal has been sent by FAX or E-mail.
The proposals' deadline for round 95/2 (October 1995 - February
1996) is 16 May 1995.
Two yearly proposal rounds were established at FLNP with the
16 October for the period February-June
16 May for the period October-February
For additional information contact
Vadim V. Sikolenko or Gizo D. Bokuchava
Frank Laboratory of Neutron Physics
Joint Institute for Nuclear Research
141980 Dubna, Moscow region, Russia
Phone: (7-09621) 65-273, (7-095) 924-39-14
Fax: (7-09621) 65-882, (7-09621) 65-429
e-mail: sikolen at nf.jinr.dubna.su
gizo at nf.jinr.dubna.su
Information about the neutron scattering instruments, user policy
and the proposal system in Frank Laboratory of Neutron Physics
is available via World Wide Web:
More information about Joint Institute for Nuclear Research is
available on http://www.jinr.dubna.su.
More information about the Neutron