asian collaboration in nuclear reaction data measurements and

International Atomic Energy Agency

1 1

Asian Collaboration in Nuclear Reaction Data Measurements and Compilation

N. Otsuka IAEA Nuclear Data Section

2012-08-27 N.Otsuka: Asian Collaboration in Nuclear

Reaction Data Measurements and Compilation


A Centre in both Experiment and Theory - Pohang -

2012-08-27

N.Otsuka: Asian Collaboration in

Nuclear Reaction Data Measurements

and Compilation

2

Asia Pacific Center for Theoretical Physics APCTP (Asian version of ISTC, Trieste)


Table of Contents

1. Progress in EXFOR compilation by Asian NRDC Centres

2. Some EXFOR experiences with “other” Asian countries

3. Progres in Experimental Covariance

2012-08-27



and Compilation

3


Nuclear Reaction Data Centres (NRDC)

14 centres from 8 countries and 2 international organisations (China, Hungary, India, Japan, Korea, Russia, Ukraine, USA, NEA, IAEA)

Coordinated by IAEA Nuclear Data Section

13 NRDC Centres are contributing to EXFOR database.


Annual NRDC Meeting

16 – 19, April, 2012, hosted by OECD Nuclear Energy Agency


Definition of “Asian Countries”

Armenia (4ARM) Korea, Republic of (3KOR)

Bangladesh (3BAN) Malaysia (3MAL)

China (3CRP) Mongolia (3MGL)

Georgia (4GRG) Pakistan (3PAK)

Hong Kong* (3HKG) Saudri Arabia (3SAR)

India (3IND) Sylia (3SY)

Iran (3IRN) China, Taiwan* (3CHF)

Israel (3ISL) Thailand (3TAI)

Japan (2JPN) Turkey (2TUK)

Jordan (3JOR) Uzbekistan (4UZ)

Kazakhstan (4KAS) Vietnam (3VN)

Korea, Dem.People's Rep.* (3KDR)

*: not an IAEA Member State

2012-08-27



and Compilation

6

Asian area defined by UN

Corresponding countries etc. seen in EXFOR entries (=23)


1. Progress in EXFOR compilation by Asian NRDC Centres (CNDC, JCPRG, KAERI, NDPCI)

2012-08-27



and Compilation

7


Exp. at Neutron Charged-particle

Heavy-ion Photon

China CNDC (Beijing)

India NDPCI (Mumbai+)

Japan NEA DB (Paris) JCPRG (Sapporo)

Kazakhstan CJD (Obninsk) CAJaD (Moscow) ?

Korea KAERI (Daejeon)

Mongolia NDS (Vienna)

Vietnam NDS (Vienna)

Definition of “Asian Entries”

Asian entries (in this talk ) = Experimental works compiled by Asian NRDC Centres

2012-08-27



and Compilation

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CNDC JCPRG KAERI NDPCI Asia

(Sum) World

2001 7 5 0 0 12 419

2002 1 54 0 0 55 414

2003 4 93 0 0 97 535

2004 0 72 0 0 72 848

2005 2 100 0 0 102 937

2006 21 80 0 10 111 680

2007 0 149 0 34 183 718

2008 0 22 0 15 37 660

2009 11 104 7 63 185 745

2010 19 50 10 12 91 470

2011 9 42 8 55 114 507

2012 3 6 0 2 11 120

EXFOR Entries - Asia and World (2001-2012+)

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How to Count Entries?

Experiment

EXFOR (prelim.)

EXFOR Database

Publication

Compilation

Review, correction

Users!

Articles

Only entries available to EXFOR users are counted (in this talk).

2012-08-27



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EXFOR Entries - Asia and World (2001-2012+)

0

100

200

300

400

500

600

700

800

900

1000

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

year of compilation

num

ber

of e

ntr

ies

Asia

World

Asia/World

0

5

10

15

20

25

30

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

year of compilation

ratio (%)

Asia = Data compiled by Asian NRDC Centres

(~15% contribution to the EXFOR library)

2012-08-27



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EXFOR Entries – Asia and World (2001-2012+) neutron data

0

50

100

150

200

250

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

year of compilation

num

ber

of e

ntries

charged-particle

0

100

200

300

400

500

600

700

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

heavy-ion (A>4)

0

20

40

60

80

100

120

140

160

180

200

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

gamma

0

10

20

30

40

50

60

70

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

Neutron CP (p,d,t,3He,α)

Heavy-Ion (HI; A>4) photonuclear (g)

250 700

200 70

2012-08-27



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12


EXFOR Entries within Asia (2001-2012+)

0

10

20

30

40

50

60

70

80

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

year of compilation

num

ber

of e

ntries

CNDC

JCPRG/2

NDPCI

KAERI

2012-08-27



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13

Indian odd-even structure due to X4 workshop


KAERI

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

year of compilation

num

ber

of e

ntries

(g)

(hi)

(cp)

(n)

NDPCI

0%

20%

40%

60%

80%

100%

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

year of compilation

num

ber

of e

ntries

(g)

(hi)

(cp)

(n)

CNDC

0%

20%

40%

60%

80%

100%

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

year of compilation

num

ber

of e

ntries

(g)

(hi)

(cp)

(n)

JCPRG

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

year of compilation

num

ber

of e

ntries

(g)

(hi)

(cp)

(n)

EXFOR Entries from Asia (2001-2012+) - Projectile CNDC JCPRG

NDPCI KAERI

γ hi cp n

cp: p, d, t, 3He, α (incl. inverse kinematics); hi: A>4

2012-08-27



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14


Current Flow of Asian Entries

2012-08-27 N.Otsuka: Asian Collaboration in


and Compilation

15

Zhang

Tao

Wang

Chen

Chen

Makinaga

Odsuren

Furutachi Dagvadorj

Tsubakihara Vidya

Ghosh

Mandal

Badwar

Furutachi (Makinaga)

Lalremruata

Yang Compiler

Regional Liaison

Otsuka

Liasion (Vienna)


My First Work with Rema (=Prof. Lalremruata)

2012-08-27



and Compilation

16

120Sn(n,p)120Inx

ENSDF evaluation (by Japanese group)


2. Recent experiences with “other” Asian countries (Kazakhstan, Mongolia, Vietnam)

2012-08-27



and Compilation

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Kazakhstan (and Uzbekistan)

A productive country of former USSR area

(~28 EXFOR entries for articles published in 1992-2012)

Inst. Yad. Fiz. (Almaty, 4KASKAZ) • U-150M cyclotron (E~<60 MeV, N. Burtebaev et al.)

• UKP-2-1 Tandem(?) (proton capture, keV)

• DG-60 cyclotron (1.7MeV/A for A/Z=6~12)

• WWR-K reactor (spectrometry by fast neutron)

Inst. Yad. Fiz. (Tashkent,4UZ UZB) • SB-50 betatron (Bremsstrahlung photon, S.R. Palvanov et al.)

• Cyclotron

• NG150 neutron generator (n,2n isomeric ratio)

• VVR-SM reactor (fission yield)

2012-08-27



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Levkovskij’s Proton and Alpha Activation Data (Very famous charged-particle activation experiment)

• Measured at Almaty, published in 1991 (by Levkovskij’s son). • 540 excitation functions of (p,x) and (α,x) isotope production. • Most frequently used Kazakh data compiled in EXFOR. • Good agreement with later measurements (after a common factor)

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Data Missing in EXFOR from KazSSR+UzSSR

• EXFOR completeness check for light-ion induced reaction activation cross section excitation functions (with Sapporo and Moscow). • ~300 articles are identified as missing experimental works in EXFOR.

• 4 are from Almaty, 2 are from Tashkent. (published in 80s and 90s)

• IZV AN KazSSR and UzSSR not available in Kurchatov Inst.

• No English translation?

• Need to scan other literature?

2012-08-27



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Mongolia

• My predecessor (Dr. Otto Schwerer) visited NRC of Nat. Univ. Mongolia in Sept. 13-16 2006 on first steps towards the establishment of a Mongolian nuclear data centre.

• He had discussion with S. Davaa, S. Lodoysamba, G. Khuukhenkhuu,..., M. Odsuren, B.Munkhbat, M. Altangerel, and ,D. Ichinkhorloo.

• He reported that decay and structure data evaluation for ENSDF could become a main activity of the data centre.

2012-08-27



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48Ti(n,n’γ948) Cross Section by Dashdorj et al.

48Ti(n,n’γ948) Cross Section as New Standard (S. Simakov, R. Nelson et al.)

•non interference from background gammas

•stable material (metal), 0.1< Eγ<1.5 MeV

•σ > 200 mb

•smooth

•abundant isotope (73.72%)

•low activated

2012-08-27



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1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.90.0

0.2

0.4

0.6

0.8

1.0

1.2

GMA

JEFF-3.1.2

Talys (opt.)

smoothed

by 60keV

Talys (def.)

Konobeevski73_g984thick

Konobeevski73_g984thin

Korzh77_nn984

Barnard74_Ti48nn1@2

Barnard74_Ti48nn1good@2

Guenther78_Ti48nn1@2

Lashuk94_Ti48g982

Dashdorj07_g984

Broder65_Ti48nn1

(n

,n'

), b

Neutron Energy, MeV

48Ti(n,n

1

984) ENDF/B-VII.1

0.00

0.50

1.00

1.50 Talys(opt) a priori

GMA (posteriori):

48Ti(n,n'

984)

Dashdorj'07

Exp.

Exp+Talys(opt)

+TENDL(cov)

(n

,n'

984)

1 10 200.00

0.05

Neutron Energy, MeV

Figures prepared by Simakov For ICNRM-13, June 2012, Valenna, Italy


Duplication of Dashdorj’s Data in EXFOR

2012-08-27



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Reaction

Source 1 Source 2 Ref. EXFOR pts. Emin

MeV

Emax

MeV

Ref. EXFOR pts. Emin

MeV

Emax

MeV

150Sm(n,n’γ)150Sm [1] 14148.003 78 1.08 33.1 [2] 14177.002 66 0.97 33.1 [1] 14148.004 81 1.01 33.1 [2] 14177.003 48 1.68 33.1

150Sm(n,2n)149Sm [3] 14266.002 17 8.66 33.1 [4] 13996.003 16 9.31 19.8 48Ti(n,x+γ)45Ca [5] 14162.119 90 1.01 174 [6] 13997.005 41 1.01 19.6 48Ti(n,n’+γ)48Ti [5] 14162.002-005, 029-067 3864 1.01 240 [6] 13997.002 4121 1.01 19.6 48Ti(n,2n+γ)47Ti [5] 14162.006-009, 069-098 800 10.5 240 [6] 13997.003 150 10.5 19.6 48Ti(n,p+γ)48Sc [5] 14162.014-017,099-103 480 1.05 174 [6] 13997.004 280 1.01 19.6

pts: Number of data points; Emin, Emax: minimum and maximum boundary of incident neutron energies References [1] D. Dashdorj et al., Nucl. Instrum. Meth B 261(2007)948 (EXFOR 14148). Data were received from the author. [2] D. Dashdroj et al., AIP Conf.Ser.1005(2007)164 (EXFOR 14177). Data were digitized from Fig.2-3. [3] D. Dashdroj et al., Nucl. Instrum. Meth. B268(2010)114 (EXFOR 14266).Data were taken from Table 1. [4] J.R. Cooper et al., Report UCRL-TR-205760 (2004) (EXFOR 13996). Data were taken from Table 2. [5] D. Dashdorj et al., Nucl. Sci. Eng. 157(2007)65 (EXFOR 14162). Data were received from the author. [6] D. Dashdorj et al., Report UCRL-TR-209474 (2005) (EXFOR 13997). Data were taken from Tables 8 - 99.

• Which sets must be used by EXFOR users? (I do not know him in person ...) • EXFOR contact person in each EXFOR country? (“Mini Centre”)


Vietnam

2012-08-27



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24

ENTRY 31715 20110923 20120207 20120113 315331715000 1

SUBENT 31715001 20110923 20120207 20120113 315331715001 1

BIB 14 31 31715001 2

TITLE Measurement of thermal neutron cross-section and 31715001 3

resonance integrals of the 69Ga(n,g)70Ga and 31715001 4

71Ga(n,g)72Ga reactions at Dalat Research Reactor 31715001 5

AUTHOR (P.N.Son, T.T.Anh, C.D.Vu, V.H.Tan) 31715001 6

INSTITUTE (3VN DAL) 31715001 7

(3VN VN) Vietnam Atomic Energy Institute, Hanoi 31715001 8

REFERENCE (J,KPS,59,1757,2011) 31715001 9

FACILITY (REAC,3VN DAL) Dalat Research Reactor 31715001 10

INC-SOURCE (THCOL) Thermal neutron channel 31715001 11

METHOD (ACTIV) Irradiated for 31715001 12

5 min (Ga+Au, with Cd cover), 31715001 13

10 min (Ga+Au, without Cd cover), 31715001 14

1 hrs (Au/Zr/W/Co, with Cd cover), 31715001 15

6 hrs (Au/Zr/W/Co w/o Cd cover). 31715001 16

SAMPLE Ga (99.95%, 2 mm x 4 mm, 0.5 mm in thickness), 31715001 17

DETECTOR (HPGE) 58% efficiency relative to 7.6 cm x 7.6 cm 31715001 18

NaI(Tl) detector, 1.9 keV energy resolution at 31715001 19

1.33 MeV. 31715001 20

DECAY-MON (79-AU-198,2.69517D,DG,411.8,0.960) 31715001 21

CORRECTION Corrected for 31715001 22

- Epithermal spectrum shape parameter 31715001 23

(alpha=0.164+/-0.013) determined by Au/Al wire, 31715001 24

Co/Al wire, W foil, Zr foil 31715001 25

- Neutron self-shielding correction factors (Gth,Gepi) 31715001 26

ERR-ANALYS (ERR-T) Uncertainties are due to 31715001 27

(MONIT-ERR) Reference value (0.1%-1.8%) 31715001 28

(ERR-S,0.1,1.2) - statistics (0.1%-1.2%) 31715001 29

(ERR-1) - gamma-ray detector efficiency (2.5%) 31715001 30

(ERR-2) - epithermal shape parameter (7.9%) 31715001 31

STATUS (APRVD) Approved by Pham Ngoc Son (2011-09-27) 31715001 32

HISTORY (20110923C) On 31715001 33

ENDBIB 31 31715001 34

NOCOMMON 0 0 31715001 35

ENDSUBENT 34 3171500199999

ENDENTRY 1 3171599999999

Two EXFOR entries

(31713, 31715) for neutron

cross section data from Dalat

(presented at ND2010 Conf.)


Neutron Flux Monitor

2012-08-27



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25

Sensitive to epithermal neutrons

Prepared by Dr. S. Nakamura (JAEA)


Vietnamese Experiment in INDC(VN) Report

2012-08-27



and Compilation

26

2004 INDC(VN)-11 Vuong Huu Tan et al.

Neutron Capture Cross Section Measurements of 109Ag, 186W and 158Gd on Filtered Neutron Beams of 55 and 144

keV

1997 INDC(VN)-10 Vuong Huu Tan

Progress Report on Research of Nuclear Data and Applied

Nuclear Physics at Nuclear Research Institute (Vietnam) for

the period January 1st - December 31st 1996

1996 INDC(VN)-09 Vuong Huu Tan Status Report of the Program on Neutron Beam Utilization

at the Dalat Nuclear Research Reactor

1996 INDC(VN)-08 Vuong Huu Tan et al. Measurement of Capture Cross Sections of 238U on the

Filtered KEV-Neutron Beams

1995 INDC(VN)-07 Vuong Huu Tan Study of Nuclear Data and Applied Nuclear Physics at the

Dalat Institute for Nuclear Research (Vietnam)

1987 INDC(VN)-06 Hien P.Z. and Lien H.N.

Preequilibrium Emission of Protons and Isotopic Effect in

the Fast Neutron-induced (n,p) Reactions on Heavy

Elements

1986 INDC(VN)-05 Hoang Dac Luc et al.

Determination of(n,p), (n,n'p) and (n,alfa) Reaction Cross

Sections Induced by 14.8 MeV on Cr Isotopes and Ti

Isotopes

1985 INDC(VN)-04 Hoang Dac Luc et al. Activation Cross Sections of(n,p) and (n,n'p) Reactions

Induced by 14.8 MeV on Cr Isotopes

1984 INDC(VN)-03 Hoang Dac Luc Progress Report on Nuclear Data Activities in Viet Nam

1983/84

1983 INDC(VN)-02 Phan Nhu Ngoc et al. Neutron activation cross section for 56Fe(n,p) and 87Rb(n,2n) reactions

1982 INDC(VN)-01 Fam-Zui-Chien et al. A Study of the Isomeric Ratio for the (n,2n) and (gamma,n)

Reactions in Mo92, Zr90, Sr86 and Se74

Dalat 3VN DAL

=? 3VN NNR

Hanoi

(3VN IPH)


Vietnamese Name Coding under EXFOR AUTHOR

2012-08-27



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27

Dear Dr. Otsuka Naohiko,

It is very nice to hear from you.

My full name is: NGUYEN VAN DO, (often write as: Nguyen Van Do). Here

NGUYEN: is my family name,

VAN: is my middle name, and

Do: is my given Name.

Yes, according the English rule, my name is abbreviated to: V. D. Nguyen, but

In my country we abbreviate as: N. V. DO.

We often call the given name. People call me Prof. Do, not Prof. Nguyen. (There are many

many Nguyen in Viet Nam), Therefore, in this case, my name in abbreviation as: N. V. Do

is preferable.

All Vietnamese names write by the same order (1) Family name, (2). Middle name and (3).

Given name, and this rule also valid for the following people:

Family name middle name given Name abbreviation

PHAM DUC KHUE P. D. Khue

KIM TIEN THANH K. T. Thanh

LE TRUONG SON L T. Son

TRAN HOAI NAM T. H. Nam

If you have some more questions, would you please le me know.

Best regards,

Nguyen Van Do

OTUKA Naohiko → N. Otuka NGUYEN Van Do → V.D.Nguyen (in English style) N.V.Do (in Vietnamese style)


Pakistan

2012-08-27



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28

Prof. Gul from PINSTECH (Pakistan Institute of Nuclear Science and Technology) 120 keV deuteron + T neutron source


New Pelletron in PINSTECH (5 MV)

2012-08-27



and Compilation

29

K. Gul et al., Nucl. Instrum. Meth. B269(2011)2032

From: [email protected]

Sent: Wednesday, August 17, 2011 1:24 PM

To: OTSUKA, Naohiko

Subject: RE: K.Gul et al.,

Nucl.Instrum.Meth.B269(2011)2032 (EXFOR D0655)

Dear Dr. OTsuka,

…

It is mainly used for beam ion analysis by materials

scientists. It is also very difficult for me to look

for some problems for research related to nuclear

data. I would be obliged if you could educate me in

this direction.

…


3. Uncertainty Information in EXFOR

2012-08-27



and Compilation

30


Comedy of ‘Errors’

N.Otsuka: ISINN-20, Alushta, Ukraine

(2012-05-25) 31

Full slides are available at the CSWEG web page (NNDC)

http://www.nndc.bnl.gov/proceedings/2008csewgusndp/

One of William Shakespeare's (1564-1616) earliest plays. (<1594)


More ‘Error’ Information in EXFOR?

-----Original Message-----

From: [email protected] [mailto:[email protected]]

Sent: Tuesday, 15 July 2008 13:07

Dear Don,

....

We compile partial errors under these headings when authors give them (But

it is impossible to compile range of systematic error like "0.1% - 10%"),

and I always ask authors to specify type of error bars (statistical error or

statistical error + some systematic errors) for my compilation.

From: NICHOLS, Alan

Sent: Monday, August 04, 2008 3:30 PM

Naohiko

… I am not a big fan when it comes to using the word "error" in this (and

many other) situations involving nuclear databases. I was brought up to

think of any quantitative variations on a mean number as that number's

"uncertainty" (whether one sigma (preferred), two sigma, or whatever).


Error and Uncertainty

True value

Reported value

Error

Uncertainty (Standard deviation)

“DATA-ERR”, “ERR-S”… in EXFOR”

Reported value

True value (unknowable)

Error

BIPM et al., Guide to the expression of uncertainty in measurement (GUM:1995)


“Target Uncertainty” for Energy Application

Evaluated data must be provided with their uncertainty information variance (standard deviation) and covariance.

ADMAB: Accelerator driven minor actinide burner

Report from OECD NEA (WPEC SG36)


(2012-05-25) 34


Example of Evaluated Cross Section (JENDL-4.0 235U fission)

Uncertainty~ 0.5%!


Impact of Covariance (Correlation) on Evaluation


(2012-05-25) 36

W.P. Poenitz, INDC(USA)-85, p249 (1981)

(Uncorrelated source dominant)

(Correlated source dominant)

C = [ Δσcor(E1) ·Δσcor(E2) ] / [ Δσtot(E1)· Δσtot(E2) ] < 1

C~0: weakly correlated, C~1: strongly correlated

covariance

Exp-old

Exp-new

Eval.

Separation to uncorrelated (~statistical) and correlated (~systematic) uncertainties by experimentalists is essential for evaluation.


New EXFOR Formats for Covariance

SUBENT 23114002 20120710 2311400200001

BIB 3 43 2311400200002

REACTION (95-AM-241(N,2N)95-AM-240,,SIG) 2311400200003

ERR-ANALYS (ERR-T,,,P) Total uncertainty 2311400200004

(MONIT-ERR,,,P) 27Al(n,a) standard x-section (1.6-5.4%)2311400200005

(ERR-1,,,U) Counting of 240Am activity (1.4-6.3%)2311400200006

(ERR-2,,,U) Counting of 24Na activity (0.7-2.0%)2311400200007

(ERR-3,,,F) Intensity of 240Am gamma line (1.2%) 2311400200008

(ERR-4,,,U) Number of 27Al in sample (0.1%) 2311400200009

(ERR-5,,,P) Number of 241Am in sample (0.3%) 2311400200010

(ERR-6,,,F) 24Na/240Am efficiency ratio (3.0%) 2311400200011

(ERR-7,,,F) Correction for decay of 240Am (0.4-0.9%)2311400200012

(ERR-8,,,U) Correction for second. neutron (<1.4%) 2311400200013

COVARIANCE (XY,9,EN,MEV) incident neutron energy 2311400200014

8.34 9.15 13.33 16.1 17.16 17.9 19.36 19.95 20.61 2311400200015

(Z,45,COR:ERR-T,PER-CENT) macro-correlation 2311400200016

100 2311400200017

35 100 2311400200018

37 42 100 2311400200019

38 43 53 100 2311400200020

40 45 57 58 100 2311400200021

41 45 57 59 84 100 2311400200022

21 24 30 31 39 39 100 2311400200023

30 34 44 45 58 59 51 100 2311400200024

20 22 29 30 40 42 39 65 100 2311400200025

…

Correlation property U: Uncorrelated

F: Fully correlated etc.

Approved in the NRDC 2012 Meeting (Paris). Formats are ready, but we need real input!


“Small Guide” to Experimentalists

W. Mannhart (2011) – INDC(NDS)0588 (Reprint of PTB-FMRB-84)

Hard copies available on request.

Small (~50 page, single columns)


“Big Guide” to Experimentalists

Big (~50 page, double columns)


“Big Guide” to Experimentalists (Cont)

• INTRODUCTION

• Overview

• Role for nuclear data uncertainties

• BASIC CONCEPTS

• Probability distributions

• Covariance matrices and correlations

• Uncertainty propagation methods

• MODELS OF EXPERIMENTS

• Mathematical models

• Special situations

• Well-designed experiments

• SOURCES OF UNCERTAINTY

• Event counting uncertainties

• Detector-related uncertainties

• Geometric and material uncertainties

• Uncertainties from data corrections

• “Psychological” errors

• DOCUMENTING UNCERTAINTIES

• Publications

• Numerical data compilations

• An overview of EXFOR

• EXFOR covariance formats

• Sample from EXFOR

• SUMMARY Accepted in July for Nucl. Data Sheets. Will be published in Dec. 2012.


An Indian Young Researcher Preparing Real Input!

B.S. Shivashankar

58Ni(n,p)58Co at BARC TIFR Pelletron (to be submitted)


Another Article in the NDS Dec. Issue

Coordinated by P. Schillebeeckx (IRMM, Geel)

TOF data reduction


Another Article in the Dec. Issue (cont.)


Summary

• New Asian EXFOR entries :

~15% of entries from the world

• Regional Liaison (mini centre) in more countries(?):

Interface with IAEA-NDS + NRDC

• Experimental covariance:

Now EXFOR formats are ready.

Let us encourage people to give real input!

asian collaboration in nuclear reaction data measurements and

Documents