Reconsideration of the Theoretical Supplementation of Decay Data in Fission Product Decay Heat Summation Calculations (II)

Naoto Hagura, Takahiro Tachibana, Tadashi Yoshida

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In our previous paper, the theoretical overcorrection in JENDL FP Decay Data File 2000 for the decay heat summation calculation was suggested. In order to eliminate this, we redefined the criteria of applying the theoretical values to average energy release per decay, that is, Eβ and Eγ values. Furthermore, the results of the TAGS (total absorption gamma ray spectrometer) measurements up to the newest ones are adopted into the decay heat calculations. As a result, we obtained a reasonable agreement between the calculation and the sample irradiation experiments, not only for 239Pu but for 233,235,238U and 241Pu. The present revision of the FP decay data file will provide us with a reasonable starting point for the future revision of the decay data file by introducing the results from the TAGS effort now in progress. In addition, the effects of the so-called pandemonium problem are clearly demonstrated and this also affects the conventional decay schemes, especially for the short-lived FP nuclides having large β-decay Qβ-values.

Original languageEnglish
Pages (from-to)492-500
Number of pages9
JournalJournal of Nuclear Science and Technology
Volume47
Issue number5
DOIs
Publication statusPublished - 2010

Fingerprint

fission products
Fission products
Gamma ray spectrometers
heat
decay
files
gamma ray spectrometers
Isotopes
Irradiation
Hot Temperature
nuclides
Experiments
irradiation

Keywords

  • Beta strength
  • Decay data
  • Fission product
  • Fission product
  • Gamma ray spectroscopy
  • JENDL
  • Pandemonium
  • TAGS

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

Cite this

Reconsideration of the Theoretical Supplementation of Decay Data in Fission Product Decay Heat Summation Calculations (II). / Hagura, Naoto; Tachibana, Takahiro; Yoshida, Tadashi.

In: Journal of Nuclear Science and Technology, Vol. 47, No. 5, 2010, p. 492-500.

Research output: Contribution to journalArticle

@article{c35bc37b9e874aecb2cd5b728e5e3038,
title = "Reconsideration of the Theoretical Supplementation of Decay Data in Fission Product Decay Heat Summation Calculations (II)",
abstract = "In our previous paper, the theoretical overcorrection in JENDL FP Decay Data File 2000 for the decay heat summation calculation was suggested. In order to eliminate this, we redefined the criteria of applying the theoretical values to average energy release per decay, that is, Eβ and Eγ values. Furthermore, the results of the TAGS (total absorption gamma ray spectrometer) measurements up to the newest ones are adopted into the decay heat calculations. As a result, we obtained a reasonable agreement between the calculation and the sample irradiation experiments, not only for 239Pu but for 233,235,238U and 241Pu. The present revision of the FP decay data file will provide us with a reasonable starting point for the future revision of the decay data file by introducing the results from the TAGS effort now in progress. In addition, the effects of the so-called pandemonium problem are clearly demonstrated and this also affects the conventional decay schemes, especially for the short-lived FP nuclides having large β-decay Qβ-values.",
keywords = "Beta strength, Decay data, Fission product, Fission product, Gamma ray spectroscopy, JENDL, Pandemonium, TAGS",
author = "Naoto Hagura and Takahiro Tachibana and Tadashi Yoshida",
year = "2010",
doi = "10.1080/18811248.2010.9711640",
language = "English",
volume = "47",
pages = "492--500",
journal = "Journal of Nuclear Science and Technology",
issn = "0022-3131",
publisher = "Atomic Energy Society of Japan",
number = "5",

}

TY - JOUR

T1 - Reconsideration of the Theoretical Supplementation of Decay Data in Fission Product Decay Heat Summation Calculations (II)

AU - Hagura, Naoto

AU - Tachibana, Takahiro

AU - Yoshida, Tadashi

PY - 2010

Y1 - 2010

N2 - In our previous paper, the theoretical overcorrection in JENDL FP Decay Data File 2000 for the decay heat summation calculation was suggested. In order to eliminate this, we redefined the criteria of applying the theoretical values to average energy release per decay, that is, Eβ and Eγ values. Furthermore, the results of the TAGS (total absorption gamma ray spectrometer) measurements up to the newest ones are adopted into the decay heat calculations. As a result, we obtained a reasonable agreement between the calculation and the sample irradiation experiments, not only for 239Pu but for 233,235,238U and 241Pu. The present revision of the FP decay data file will provide us with a reasonable starting point for the future revision of the decay data file by introducing the results from the TAGS effort now in progress. In addition, the effects of the so-called pandemonium problem are clearly demonstrated and this also affects the conventional decay schemes, especially for the short-lived FP nuclides having large β-decay Qβ-values.

AB - In our previous paper, the theoretical overcorrection in JENDL FP Decay Data File 2000 for the decay heat summation calculation was suggested. In order to eliminate this, we redefined the criteria of applying the theoretical values to average energy release per decay, that is, Eβ and Eγ values. Furthermore, the results of the TAGS (total absorption gamma ray spectrometer) measurements up to the newest ones are adopted into the decay heat calculations. As a result, we obtained a reasonable agreement between the calculation and the sample irradiation experiments, not only for 239Pu but for 233,235,238U and 241Pu. The present revision of the FP decay data file will provide us with a reasonable starting point for the future revision of the decay data file by introducing the results from the TAGS effort now in progress. In addition, the effects of the so-called pandemonium problem are clearly demonstrated and this also affects the conventional decay schemes, especially for the short-lived FP nuclides having large β-decay Qβ-values.

KW - Beta strength

KW - Decay data

KW - Fission product

KW - Fission product

KW - Gamma ray spectroscopy

KW - JENDL

KW - Pandemonium

KW - TAGS

UR - http://www.scopus.com/inward/record.url?scp=85010533625&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85010533625&partnerID=8YFLogxK

U2 - 10.1080/18811248.2010.9711640

DO - 10.1080/18811248.2010.9711640

M3 - Article

AN - SCOPUS:85010533625

VL - 47

SP - 492

EP - 500

JO - Journal of Nuclear Science and Technology

JF - Journal of Nuclear Science and Technology

SN - 0022-3131

IS - 5

ER -