# Variance Reduction Factor of Nuclear Data for Integral Neutronics Parameters

## Abstract

We propose a new quantity, a variance reduction factor, to identify nuclear data for which further improvements are required to reduce uncertainties of target integral neutronics parameters. Important energy ranges can be also identified with this variance reduction factor. Variance reduction factors are calculated for several integral neutronics parameters. The usefulness of the variance reduction factors is demonstrated.

- Authors:

- Publication Date:

- OSTI Identifier:
- 22436759

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Nuclear Data Sheets; Journal Volume: 123; Conference: International workshop on nuclear data covariances, Santa Fe, NM (United States), 28 Apr - 1 May 2014; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 22 GENERAL STUDIES OF NUCLEAR REACTORS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; DATA; DATA COVARIANCES; ENERGY RANGE; INTEGRAL CROSS SECTIONS; REACTORS

### Citation Formats

```
Chiba, G., E-mail: go_chiba@eng.hokudai.ac.jp, Tsuji, M., and Narabayashi, T.
```*Variance Reduction Factor of Nuclear Data for Integral Neutronics Parameters*. United States: N. p., 2015.
Web. doi:10.1016/J.NDS.2014.12.011.

```
Chiba, G., E-mail: go_chiba@eng.hokudai.ac.jp, Tsuji, M., & Narabayashi, T.
```*Variance Reduction Factor of Nuclear Data for Integral Neutronics Parameters*. United States. doi:10.1016/J.NDS.2014.12.011.

```
Chiba, G., E-mail: go_chiba@eng.hokudai.ac.jp, Tsuji, M., and Narabayashi, T. Thu .
"Variance Reduction Factor of Nuclear Data for Integral Neutronics Parameters". United States.
doi:10.1016/J.NDS.2014.12.011.
```

```
@article{osti_22436759,
```

title = {Variance Reduction Factor of Nuclear Data for Integral Neutronics Parameters},

author = {Chiba, G., E-mail: go_chiba@eng.hokudai.ac.jp and Tsuji, M. and Narabayashi, T.},

abstractNote = {We propose a new quantity, a variance reduction factor, to identify nuclear data for which further improvements are required to reduce uncertainties of target integral neutronics parameters. Important energy ranges can be also identified with this variance reduction factor. Variance reduction factors are calculated for several integral neutronics parameters. The usefulness of the variance reduction factors is demonstrated.},

doi = {10.1016/J.NDS.2014.12.011},

journal = {Nuclear Data Sheets},

number = ,

volume = 123,

place = {United States},

year = {Thu Jan 15 00:00:00 EST 2015},

month = {Thu Jan 15 00:00:00 EST 2015}

}

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