isotope reactor Articles

  • Isotope correlations for determining the isotopic composition of plutonium produced in research and power reactors using the experimental data obtained by alpha and mass spectrometry

    Correlations have been developed for obtaining the isotopic composition of Pu produced in Indian research (CIRUS, DHRUVA) and power (PHWR) reactors. The experimental data obtained on 238Pu/(239Pu + 240Pu) alpha activity ratio using alpha spectrometry and on 240Pu/239Pu, 241Pu/239Pu, 242Pu/239Pu atom ratios by thermal ionisation mass spectrometry were used for developing isotope ...


    By Inderscience Publishers

  • A brief overview of the research reactor FRM II

    The research reactor Forschungsneutronenquelle Heinz Maier-Leibnitz (FRM II) is operated using a single compact fuel element embedded in a large heavy water filled moderator tank. Consequently the thermal neutron flux density exhibits its maximum value outside the fuel element in an area which is accessible for experimental installations. A further advantage of the use of heavy water is that it ...


    By Inderscience Publishers

  • Experience with the operation, maintenance and utilisation of the 3 MW TRIGA Mark-II research reactor of Bangladesh

    The 3 MW TRIGA (Training, Research, Isotope, General Atomics) Mark-II research reactor of the Bangladesh Atomic Energy Commission (BAEC) has been operating at Atomic Energy Research Establishment (AERE), Savar, Dhaka, since September 1986. Since its commissioning, the reactor has been used in various fields of research and utilisation, such as Neutron Activation Analysis (NAA), Neutron ...


    By Inderscience Publishers

  • Application of chemometry for identification of the source of plutonium

    Isotope correlations and chemometry using Principal Component Analysis (PCA) have been used on the experimental data on Pu from different kinds of reactors, e.g. research, power reactors with low and high burn-up as well as for fuels with different 235U content. It is demonstrated that the combined use of isotope correlations and PCA is a powerful tool to ...


    By Inderscience Publishers

  • Depleted uranium technical brief

    Depleted uranium (DU) is a byproduct of the process used to enrich natural uranium for use in nuclear reactors and in nuclear weapons. Natural uranium is composed of three isotopes; 234U, 235U, and 238U (see Table 1) [1]. The enrichment process concentrates both the 235U and the 234U isotopes in the product material, resulting in a waste product or byproduct depleted in both 235U and 234U. The ...

  • Mass spectrometric studies on irradiated (U, Pu) mixed carbide fuel of FBTR

    Mass spectrometry was employed to characterise the irradiated mixed carbide fuel of fast breeder test reactor (FBTR) for assessing its performance: thermal ionisation mass spectrometry to determine the isotopic composition, concentrations of U, Pu and Nd in the dissolver solutions and to deduce the burn-up, and a quadrupole mass spectrometric system to obtain the percentage release of fission ...


    By Inderscience Publishers

  • On the removal of silver and antimony radionuclides from radioactive liquid waste by some classical means

    After partial upgrading of a research reactor at the Pakistan Institute of Nuclear Science and Technology, Islamabad, some waste effluents having 110mAg and 124Sb with higher activity levels than the disposal limits piled up because the waste storage capacity was not yet enhanced. Experimental work was conducted to arrive at some optimum procedure for the treatment of the waste to ensure smooth ...


    By Inderscience Publishers

  • Effect of iodine chemical form on thyroid doses during a severe accident

    In most of the accidents that may occur in nuclear reactors, the short-term radiological consequences are expected to be dominated by isotopes of iodine. The assessment of doses resulting from iodine release during a severe reactor accident requires knowledge of the iodine chemical forms and removal mechanisms prior to the release to the environment. In this paper, the arguments concerning iodine ...


    By Inderscience Publishers

  • Interviews: Ken Buesseler, Researcher into marine discharges at Fukushima

    We as scientists do have a responsibility and I hope to be able to contribute in some way“ Ken Buesseler, researcher at the Wood Hoods Oceanographic Institute is investigating the radioactivity leaked from the Fukushima nuclear power station, initially from data facilitated by the TEPCO (Tokyo Electric Power Company) and then from samples gathered in situ. He believes that official bodies ...

  • The development of an MCNP tally-based burnup code

    The aim of this study is to evaluate the potential capabilities of a newly developed burnup code called BUCAL1. The code provides the full capabilities of the Monte Carlo code MCNP5 through the use of MCNP tally information. BUCAL1 uses the fourth-order Rung Kutta method with the predictor-corrector approach as an integration method to determine fuel composition at a desired burnup step. The ...


    By Inderscience Publishers

  • Ionising Radiation

    Introduction The energy level of some types of radiation is high enough so that when they interact with matter they cause the formation of electrically charged particles or ion-pairs and break molecular bonds. These so-called ionising radiations are by their nature potentially harmful to life; at high doses they can be lethal and at lower doses can cause genetic damage. Ionising radiation occurs ...

  • Weigh batching: the benefits of an automated system

    In many plants that batch-blend bulk products, weigh batching is a manual, time-consuming operation in which ingredients are weighed individually before being charged to a blender or other process vessel. A significant number of such plants could benefit from the installation of an automated weigh batching system. For small as well as large operations, an automated weigh batching system can pay ...


    By Flexicon Corporation

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