BROND-3.1 library final version · New experimental data on the 50Cr(n,α) cross sections 0 2 4 6 8 10 12 14 16 18 20 0.00 0.01 0.02 0.03 0.04 0.05 ENDF/B-VII.1 JENDL-4.0 BROND-3

BROND-3.1 library final version

Oleg Grudzevich

Institute for Physics and Power Engineering,

Obninsk, Russia

WPEC Meeting, Paris, 9-13 May 2016

BROND-3.1: Main features

New XS measurements

New DN yield measurements

Some XS reevaluations

Cross-section uncertainty matrixes

Data verification with the benchmarks: spherical geometry & K-eff data

372 complete files

Library release


New experimental data on the 50Cr(n,α) cross sections

0 2 4 6 8 10 12 14 16 18 20

0.00

0.01

0.02

0.03

0.04

0.05

ENDF/B-VII.1

JENDL-4.0

BROND-3

Dolya 1973

IPPE 2014

Cro

ss s

ect

ion

, b

Neutron energy, MeV

3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0

0.000

0.002

0.004

0.006

0.008

0.010

0.012

BROND-3.1 WPEC Meeting, Paris, 9-13 May 2016

New experimental data

0 2 4 6 8 10 12 14 16 18 200

5

10

15

20

25

30

35

40

45

BROND3.1

ENDFBVII.1

JENDL4.0

IPPE (0+

1)

neutron energy, MeV

57Fe(n,)

, m

b

0 1 2 3 4 5 6 7 80

1

2

3

4

5

neutron energy, MeV


New experimental data – delayed neutron yields

0.01 0.1 1 10 100

1000

10000

dN

(t)

/dt, c

ou

nts

/s

t, s

exp. data

evaluation

235U, t

irr= 180 s

fast neutrons


0.01 0.1 1 10 100 1000

100

1000

10000

100000

dN

/dt, counts/s

t, s

thermal neutrons

New evaluations for coolant isotopes. 209Bi(n,γ)


Энергия нейтронов, кэВ

1 10 100 1000

Се

че

ние

, м

ба

рн

1

10

ENDF/B-VII.1

JENDL-4

K. Saito, 22848002 (2004)

P. Mutti, 22400003 (1997), MACS

K. Saito, 22848005 (2004)

S. Bisterzo, 23051004 (2007) 210gBi + 0.65 mB (

C. Domingo-Pardo, 22944002 (2006)

EVPAR расчёты = БРОНД-3

WPEC Meeting, Paris, 9-13 May 2016BROND-3.1


Digital simulation of neutron leakage spectra from spheres

9

10-1

100

101

10-4

10-3

10-2

10-1

100 Pb

83Li

17, R=20, r=6 см

Спе

ктр

не

йтр

оно

в, 1

/МэВ

/1n

s

Энергия нейтронов, МэВ - эксп., БРОНД-3, ENDF/B-VII.1


Comparison of experimental & calculated K-eff

for fast uranium and plutonium critical assemblies

0.990

0.995

1.000

1.005

1.010

hmf0101

hmf0401

hmf0801

hmf1101

hmf1801

hmf2001

hmf3101

EXP B-VII.1 JEF311 JENDL-4.0 RF2010

0.992

0.994

0.996

0.998

1.000

1.002

1.004

1.006

pmf0101

pmf0201

pmf1101

pmf2201

pmf2401

pmf2701

pmf2901

pmf3101

Benchmark RF2010 B-VII.1

JEF311 JENDL-4.0

10


IPPE benchmark data and K-eff calculations

E52 – ENDF/B-V.2; E70 – ENDF/B-VII.0; E71 – ENDF/B-VII.1; J311 – JEFF-3.1.1; L-40 – JENDL-4.0; TL12 - TENDL-2012.

K B R -1 5 (C r )

(H C I0 5 -4 )

0 .8 5

0 .9 0

0 .9 5

1 .0 0

1 .0 5

1 .1 0

1 .1 5

1

Ra

tio

C

/E

B E N C H M A R K

R F 2 0 1 0

R F + C r5 3 (B R 3 u )

E -5 2

E -7 0

E -7 1

J 3 1 1

L -4 0

T L 1 2

- 8 .2 %

K B R -7 (N i)

(H C I0 5 -1 )

0 .9 5 0

0 .9 7 5

1 .0 0 0

1 .0 2 5

1 .0 5 0

1

Ra

tio

C/E

B E N C H M A R K

R F 2 0 1 0

R F + N i(B R 3 )

E -5 2

E -7 0

E -7 1

J 3 1 1

L -4 0

T L 1 2

+ 1 .2

11

After reevaluations


BROND-3.1

The compiled version of the BROND-3.1

library includes of 372 files.

Isotopes from hydrogen to curium.

Neutron energy range from thermal to 20

MeV.

Covariances are included for 140 files.

Date of release – May 2016.


Documents

BROND-3.1 library final version · New experimental data on the 50Cr(n,α) cross sections 0 2 4 6 8 10 12 14 16 18 20 0.00 0.01 0.02 0.03 0.04 0.05 ENDF/B-VII.1 JENDL-4.0 BROND-3