Memo CP-D/305

24 March 1999

To: Distribution
From: V.G. Pronyaev, M. Lammer, O. Schwerer

Subject: New theoretical quantities for CINDA-2000
In fulfilment of Action 28 of the 1998 NRDC meeting we are submitting
in a PostScript attachment a proposal for new theoretical quantities.

Specific Theoretical (Model Dependent) Quantities for CINDA-2000.
V.G. Pronyaev, M. Lammer, O. Schwerer
Nuclear Data Section , IAEA
14th NRDC Meeting[1] requested under Action A28 to investigate which specifictheoretical quantities should be added for the CINDA-2000 publication. The reason for thisrequest is explained by the fact that presently the quantities for CINDA compilation do notinclude some well established and fixed theoretical model parameters usually extracted at thestage of the analysis of experimental data. The inclusion of these parameters in the list ofcompiled quantities may provide for a simple search and retrieval of the related referencesfrom the CINDA database.
A list of theoretical quantities (parameters) widely used in modern theoretical model
analysis and for the description of the nuclear cross sections may be taken, for example, from[2]. Usually the parameters are model dependent. It means that a set of parameters is closely
related to the model used for reaction data analysis. After comparing this list with the 54quantities currently included in the CINDA dictionary, and taking into account that CINDA2000 would extend the list of incident particles for reaction data, we propose to add inCINDA-2000 the following specific theoretical quantities:

SOM Parms (SOM)
Definition: Parameters ofthe Spherical Optical Model derived by search or adjusted by fitting to the integral and/ordifferential cross sections, and/or strength functions for specified target nucleus, incident
particle, and energy range.
Examples:
AFE056 N
SOM
USABNLN001 2T 1.0+6 2.0+7 1
JPR C51 1386
199901SMITH+TOT,DIF EL,NONEL CS ANLZD
ACR052 A
JPRL 351 15

SOM
RUSFEIJ021 5T 1.0+7 6.0+7
199902IVANOV.DIF EL CS ANALYZED

1

CCM Parms (CCM)
Definition: Parameters of
the Coupled Channel Model derived by search or adjusted by fitting to the integral and/ordifferential cross sections, and/or strength functions for specified target nuclei, incident
particle and energy range.
Example:APB208 P
CCM
RUSFEIN011 1T 1.0+7 9.0+7 1J
PR C51 1186
199901SIDOROV+DIF EL CS,6 COLL LVL
ANLZD
CCM could be combined with SOM in one common quantity: OMP (optical modelparameters)

DFM Parms (DFM)
Definition:
Deformation
Parameters of the ground and/or exited states (including also deformation lengths, transitionaldensities, potentials or B(EL) values) derived from analysis of direct excitation of states in areaction for specified target nuclei, incident particle and energy range.
Examples:ACA040 P,PDFM
RUSFEIN011 1T 2.4+71JPR C51 1186
199901PETROV+DIF INL CS,MEAN SQ ROOTDEF PAR FOR 6 LVLS EXTR
ACA040 E,EDFM
RUSFEIN011 1T 1.3+81
JPR C51 1186
199901PETROV+DIF INL SCAT, TRANS DENS
FOR 3 2+ LVLS EXTR
DFM bibliography compilation may be considered as belonging to the NSR.

GMR Parms (GMR)
Definition:
Parameters(Characteristics) of Giant Multipole Resonance derived from analysis of direct excitation ofthis collective state in reaction for specified target, particle and incident energy range.
Example:ASN120 A,A
GMR
RUSFEIN011 1T 2.4+71JPR C51 1186
199901POPOV+% OF EWSR FOR ISOSCALAR
L=0,SMALL ANGLE SCATT.
GMR, as specific collective states laying in continuum, could be combined withDFM in one quantity which could be also called DFM. GMR bibliography compilation
may be considered as belonging to the NSR.

Strn Fnctn (STF)
Definition:
Strength
Function (ratio of average width to average distance between states for a channel with fixed
quantum numbers) obtained from the analysis of average resonance parameters in theresolved or average cross sections in the unresolved resonance region for a specified target(compound) nucleus, incident (outgoing) particle and energy averaging interval. The reduced
strength function is normally used for particles with mass to remove strong dependence of thestrength function from the particle energy due to barrier penetration.
Strength Function was defined before in CINDA only for neutrons.
The introduction of these theoretical quantities will allow users to make search andretrieval of references on the works containing the determination of these quantities. The
additional theoretical quantities would SOM, CCM, DFM and GMR, or the combinedquantities OMP and DFM.
References
1. Report INDC(NDS)-383, Co-ordination of the Nuclear Reaction Data Centers. Report ofan IAEA Advisory Group Meeting, IAEA Headquarters, Vienna, 11 - 15 May 1998, ed. byV.G. Pronyaev, O. Schwerer, IAEA, 1998.
2. Report IAEA-TECDOC-1034, Handbook for calculations of nuclear reaction data.
Reference input parameter library, IAEA, 1998.
3. CINDA2000 Manual, Preliminary Version by V. McLane, November 1998.