# The effect of gamma-ray transport on afterheat calculations for accident analysis

## Abstract

Radioactive afterheat is an important source term for the release of radionuclides in fusion systems under accident conditions. Heat transfer calculations are used to determine time-temperature histories in regions of interest, but the true source term needs to be the effective afterheat, which considers the transport of penetrating gamma rays. Without consideration of photon transport, accident temperatures may be overestimated in others. The importance of this effect is demonstrated for a simple, one-dimensional problem. The significance of this effect depends strongly on the accident scenario being analyzed.

- Authors:

- Publication Date:

- Research Org.:
- Univ. Nacional de Educacion a Distancia Escuela Tecnica Superior Ingenieros Industriales, Madrid (ES)

- Sponsoring Org.:
- USDOE; Spanish Ministerio de Educacion y Cultura

- OSTI Identifier:
- 20067765

- DOE Contract Number:
- W-7405-ENG-48

- Resource Type:
- Journal Article

- Journal Name:
- Fusion Technology

- Additional Journal Information:
- Journal Volume: 37; Journal Issue: 3; Other Information: PBD: May 2000; Journal ID: ISSN 0748-1896

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; SAFETY ANALYSIS; SOURCE TERMS; THERMONUCLEAR REACTORS; ACCIDENTS; AFTER-HEAT; HEAT TRANSFER; GAMMA RADIATION; PHOTON TRANSPORT

### Citation Formats

```
Reyes, S., Latkowski, J.F., and Sanz, J.
```*The effect of gamma-ray transport on afterheat calculations for accident analysis*. United States: N. p., 2000.
Web.

```
Reyes, S., Latkowski, J.F., & Sanz, J.
```*The effect of gamma-ray transport on afterheat calculations for accident analysis*. United States.

```
Reyes, S., Latkowski, J.F., and Sanz, J. Mon .
"The effect of gamma-ray transport on afterheat calculations for accident analysis". United States.
```

```
@article{osti_20067765,
```

title = {The effect of gamma-ray transport on afterheat calculations for accident analysis},

author = {Reyes, S. and Latkowski, J.F. and Sanz, J.},

abstractNote = {Radioactive afterheat is an important source term for the release of radionuclides in fusion systems under accident conditions. Heat transfer calculations are used to determine time-temperature histories in regions of interest, but the true source term needs to be the effective afterheat, which considers the transport of penetrating gamma rays. Without consideration of photon transport, accident temperatures may be overestimated in others. The importance of this effect is demonstrated for a simple, one-dimensional problem. The significance of this effect depends strongly on the accident scenario being analyzed.},

doi = {},

journal = {Fusion Technology},

issn = {0748-1896},

number = 3,

volume = 37,

place = {United States},

year = {2000},

month = {5}

}

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