Paraskevi (Vivian) Dimitriou

Data Development Unit, Nuclear Data Section

International Atomic Energy Agency, Vienna, Austria

Coordinated Research Project on Updating the photonuclear Data Library and generating a Reference Database for Photon Strength Functions

Basic Sciences: experiment + theory

JYFLTRAP Penning trap

Applications: radiation shielding, medical dosimetry, reactor operation +safety, decommissioning, forensics, homeland security, cultural heritage, environmental monitoring

Data for applications:

• Complete • Organised • Traceable

Basic Sciences: experiment + theory

JYFLTRAP Penning trap

Nuclear Data

Compilation

Evaluation

Dissemination

Data for applications:

• Complete • Organised • Traceable

Basic Sciences: experiment + theory

JYFLTRAP Penning trap

Nuclear Data

Compilation

Evaluation

Dissemination

Photonuclear Data

(γ,abs), (γ,xn)

Photon Strength Functions (↑↓)

Radiation shielding

Dosimetry

Reactor physics

Non-proliferation

Nuclear structure

Nuclear astrophysics

Photonuclear Data

(γ,abs), (γ,xn)

Photon Strength Functions (↑↓)

Radiation shielding

Dosimetry

Reactor physics

Non-proliferation

Nuclear structure

Nuclear astrophysics

IAEA Nuclear Data Section:

development and dissemination of nuclear data –

Coordinated Research Projects

Online databases

IAEA Photonuclear Data Library (1999)

IAEA Photonuclear Data Library (1999)

New Coordinated Research Project: 2016-2020

• Update the Photonuclear Data Library

• Generate a Reference Database for Photon Strength Functions

• 14 participants from 12 countries + 3 advisors

• 3 Research Coordination Meetings

• 1st Research RCM: 4-8 April 2016, IAEA, Vienna: scope of project, tasks assigned

Scope of the project

Updated Photonuclear Data Library

Database for

Photon Strength Functions

Measurements

Compilation

Assessment

Theory

Evaluation

Dissemination

Photonuclear Data Library • Measurements (γ,xn): PHEONIX COLLABORATION

(Utsunomiya’s talk)

Japan team: 197Au, 181Ta, 139La

ELI-NP team: 169Tm, 165Ho, 159Tb

Moscow State Univ. team: 103Rh, 89Y, 59Co

• Assessment of (γ,xn) – Recommendation of data

Fi functions/corrections (Varlamov)

• Evaluation of (γ,xn)/ (γ,abs): cross-section data (200 MeV)

CCONE (JAEA) (Iwamoto)

GUNF (CNDC) (Xu, Wang)

TALYS/EMPIRE (KAERI, ELI-NP) (Cho, Filipescu)

• Atlas of GDR parameters (Plujko)

• Dissemination (data library) (IAEA)

New retrieval interface

Photoneutron cross sections: multiplicity puzzle

197Au(,2n)195Au

Saclay data (circles)

Livermore (crosses)

1999 CRP

new evaluation criteria by Varlamov:

F1, F2, F3 corrections for (γ,1n), (γ,2n),

(γ,3n)

Ultimately: new data from new multiplicity sorting technique (Utsunomiya)

Updated IAEA Photonuclear Data Library - Recommended evaluated photonuclear data for 164 + 37 new isotopes

for incident photons (gamma rays) with energies up to 200 MeV

Cho (KAERI)

Updated IAEA Photonuclear Data Library

- PSF extracted from all EXFOR (γ,abs) cross sections

-New ATLAS OF GDR PARAMETERS: SLO and MLO parameters

(Plujko)

Data for 18 new isotopes are included in the tables. Data are changed for 87 isotopes. 102 new values are added from 23 sources. 12 values were omitted.

Comparison data with calculations

within SLO, MLO, TLO models

SLO, MLO individual parameters SLO, MLO systematics

TLO - Triple (triaxial) Lorentzian [Junghans, A. R., et al. Phys.Lett. B 670,3 (2008): 200.] TLO model with β and γ parameters for 124Sn, 178Hf, 181Ta,186Os, 208Pb, 138Ba, are taken from Attachments to the Ref.

Delaroche, J-P., et al. Physical Review C 81.1 (2010): 014303.

CEA database, http://www-phynu.cea.fr/HFB-5DCH-table. htm, and supplementary material at

http://link.aps.org/ supplemental/10.1103/PhysRevC.81.014303 for tables of predicted properties of even-even

nuclei and for color and black and white charts.

http://www-phynu.cea.fr/science_en_ligne/carte_potentiels_microscopiques/tables/HFB-5DCH-table-

2009eng.txt

Photon Strength Functions database

Group Nuclides Technique

S. Siem (Oslo) 111,112,113Sn, 92Mo (12/2016) 152,153Sm (12/2018), 186W (12/2017) 144,145,148,149,150,151Nd (12/2017) 234U, 240Pu (12/2016) 203,205Tl (12/2016); 192Os (12/2017), 185Re (12/2017); 182,183,184W (12/2018); 89Y (12/2016); 64Zn (2019), 66,68Zn (12/2018)

Oslo charged-

particles

(γ,n)

M. Wiedeking

(iThemba)

74Ge (12/2017), 180,181,182Ta (12/2016) 154,155Sm (05/2018)

Ge (ratio method) ;

Ta (Oslo method)

R. Schwengner

(HZDR)

80Se (12/2016); 54Fe (12/2017);

A~60 (62Ni, 64Zn tbc) (03/2019)

At Elbe and/or Higs

(54Fe)

T. Belgya (HAS) 233Th, 239U (12/2017) thermal n-capture

H.Utsunomiya

(Konan)

156,157,158,160Gd (2019) 58,60,64Ni (12/2017)

(γ,n)

• New measurements

Photon Strength Functions database

• Compilation of f(L) data (coordinator: Wiedeking)

Oslo Method, ratio Method, NRF ~ 114 data files (+NLD data files)

More to come: new data, thermal and resonance neutron capture, β-Oslo, (p,p’)

Goal: completeness of database

(γ,abs)/(γ,xn) cross sections : 214 data files

Average Resonance Capture data: over 30 data files

PSF database - Each data set entry contains 2 files:

1. Readme file: how PSF is extracted from raw data -references

2. PSF file: X Y dY

3. Oslo method: NLD data files provided

1.00E-09

1.00E-08

1.00E-07

1.00E-06

1.00E-05

0 5 10 15 20 25

f1 (

MeV

-3)

Eγ

181Ta

1963Br1

1968Be5

1981Gur

2012Var

Schwengner

Malatji

Brits

1.00E-09

1.00E-08

1.00E-07

1.00E-06

0 5 10 15 20 25 30

f1 (

Me

V-3

)

Eγ

139La

1971Be4

Kheswa

Schwengner

1.00E-09

1.00E-08

1.00E-07

1.00E-06

1.00E-05

0 5 10 15 20 25 30

f1 (

MeV

-3)

Eγ

89Y

1967Be2

1971Le1

1972Yo

2003Var

Schwengner

Larsen (high)

Larsen (low)

Larsen (rec)

1.00E-09

1.00E-08

1.00E-07

1.00E-06

0 5 10 15 20 25 30

f1 (

MeV

-3)

Eγ

92Mo

1967Be2

Schwengner

Tveten (high)

Tveten (low)

Tveten (rec)

After compilation/collection of all available PSF data:

• Assessment of data/techniques considering all uncertainties (model dependent)

(Siem, Wiedeking, Schwengner, Krticka, Belgya, Firestone)

• Global models (QRPA, EGLO, TSE) +TLO

(Goriely, Plujko, Schwengner)

• Global empirical formula for enhanced M1 mode (Kawano)

• Validation of PSF (exp. and theo) (Krticka, Belgya)

• Recommendation of best PSF

New PSF database (in preparation) By clicking on a nuclide produce plots on-the-fly with all available data and models in the database:

92Mo

94Mo

95Mo

96Mo

97Mo

98Mo

Upload and plot User data

Download all data

New PSF database (in preparation) By clicking on a nuclide produce plots on-the-fly with all available data and models in the database:

92Mo

94Mo

95Mo

96Mo

97Mo

98Mo

Upload and plot User data

Download all data

Feed into RIPL

Work in progress

• 2nd RCM 16-20 Oct. 2017: PSF

– Assessment of techniques for 96,98Mo - Recommendation of PSF data

– Comparison of exp. PSF with global models

– Validation of recommended PSFs

– Dissemination of DICEBOX package

– Finalize PSF database interface and plotting tools

Work in progress

• 2nd RCM 16-20 Oct. 2017: Photonuclear

– Compare new Multiplicity sorting data vs Fi correction method

– New evaluations of 164+37 nuclides

– Atlas of GDR parameters

http://www-nds.iaea.org/CRP-photonuclear

Thank you!