[Estimating Nuclear Energy under Small Resources: Study of Uranium Critical Conditions by Hidehiko Tamaki at the Institute of Physical and Chemical Research (Riken), 1943] 小資源下の核エネルギー評価：理化学研究所における 玉木英彦によるウラン臨界条件の研究 1943 年 (2020)
Yamazaki, Masakatsu (Author)
科学史研究 Kagakusi Kenkyu (History of Science)
Volume: 60
Issue: 297
Pages: 1-18
Hidehiko Tamaki, who engaged the uranium criticality calculations at the Riken during the Second World War, died on February 10, 2013, and the related materials at Tamakiʼs house were preserved at the Riken Archives in Wako City, Saitama Prefecture. The author takes up a handwritten manuscript by Tamaki that begins with “§1. Necessity of chain reaction and factors that hinder its realization,” and examines it using reproduction calculation. It is shown that Tamaki had obtained the mixture ratio of uranium and water as moderator so that it let the amount of uranium used minimum. It was also pointed out that there was a discrepancy in the formula of the output energy evaluated under the condition of constant pressure. After presenting a method to avoid it, Rikenʼs reactor system was reexamined, and it is shown that there was a lack of the concept of controlling chain reactions including consideration of delayed neutrons and neutron absorbers such as the control rods of todayʼs nuclear reactors, so it was difficult to use it for power.
...MoreSimilar Citations
Book
Kim, Dong-Won;
(2007)
Yoshio Nishina: Father of Modern Physics in Japan
(/isis/citation/CBB000831259/)
Article
Yamazaki, Masakatsu;
(2001)
[Riken's Uranium Bakudan: Japanese Nuclear Weapons Research during the Second World War]
(/isis/citation/CBB000100900/)
Article
Takahisa 高久 Amemiya 雨宮;
(2019)
[On the Drafting and Postponing of the B-plan by the Special Panel on Nuclear Fusion Research] 核融合専門部会によるb計画の立案と先送り
(/isis/citation/CBB618502010/)
Book
Jacob Darwin Hamblin;
(2021)
The Wretched Atom: America's Global Gamble with Peaceful Nuclear Technology
(/isis/citation/CBB105394498/)
Article
Sahm, Astrid;
(2013)
Atomenergie in Ost- und Westeuropa: Reaktionen auf Tschernobyl und Fukushima
(/isis/citation/CBB001200600/)
Article
Koyama, Shunshi;
(2007)
Variable Shaped Electron Beam Lithography for Fabrication of Very Large-Scale Integrated Circuits: An Example of Research and Development in the Information Science Laboratory, The Institute of Phsycial and Chemical Research
(/isis/citation/CBB000930003/)
Book
James Mahaffey;
(2018)
Atomic Adventures: Secret Islands, Forgotten N-Rays, and Isotopic Murder: A Journey into the Wild World of Nuclear Science
(/isis/citation/CBB558278837/)
Article
Klaus Hentschel;
(2020)
„Der neue Weg“: Mit „interatomarer Energie“ zum „Herrn der Welt“ werden: Zu einem bislang unbekannten Typoskript vom Oktober 1944 (“Inneratomic Energy” as the “New Path” Towards Becoming “Master of the World”)
(/isis/citation/CBB246301984/)
Book
Alex Wellerstein;
(2021)
Restricted Data: The History of Nuclear Secrecy in the United States
(/isis/citation/CBB433725241/)
Article
Mendoza, Diego Hurtado de;
(2005)
Autonomy, even Regional Hegemony: Argentina and the “Hard Way” toward Its First Research Reactor (1945--1958)
(/isis/citation/CBB000651661/)
Book
Craig Nelson;
(2014)
The Age of Radiance: The Epic Rise and Dramatic Fall of the Atomic Era
(/isis/citation/CBB788069512/)
Article
Tatiana Kasperski;
Paul Josephson;
(2023)
Women, Reactors, and Nuclear Weapons: From Revolutionary Liberation to the "Miss Atom" Pageant in (Post-)Soviet Russia
(/isis/citation/CBB684442709/)
Article
Carlo Patti;
(2015)
The Origins of the Brazilian Nuclear Programme, 1951–1955
(/isis/citation/CBB366043006/)
Article
David Holloway;
(2016)
The Soviet Union and the Creation of the International Atomic Energy Agency
(/isis/citation/CBB113690975/)
Article
Johnston, Sean F.;
(2011)
Making the Invisible Engineer Visible: DuPont and the Recognition of Nuclear Expertise
(/isis/citation/CBB001230737/)
Article
Ge, Neng-quan;
(2004)
Prof. Qian Sanqiang (Tsien San-Tsiang) and the Early Efforts in the Development of Atomic Energy Science in China
(/isis/citation/CBB000502080/)
Essay Review
Feldman, James W.;
(2013)
Testing the Nuclear Paradox
(/isis/citation/CBB001566296/)
Book
Brown, Gerald E.;
Lee, Chang-Hwan;
(2006)
Hans Bethe and His Physics
(/isis/citation/CBB000741531/)
Article
Alcañiz, Isabella;
(2010)
Bureaucratic Networks and Government Spending: A Network Analysis of Nuclear Cooperation in Latin America
(/isis/citation/CBB001020860/)
Article
Joye-Cagnard, Frédéric;
Strasser, Bruno J.;
(2009)
Energie atomique, guerre froide et neutralité: La Suisse et le plan “Atomes pour la Paix”, 1945--1957
(/isis/citation/CBB001022687/)
Be the first to comment!