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Sunday, October 18, 2020 | History

2 edition of Part I: Induced radioactivity in europium found in the catalog.

Part I: Induced radioactivity in europium

Kasimir Fajans

Part I: Induced radioactivity in europium

by Kasimir Fajans

  • 68 Want to read
  • 17 Currently reading

Published by Lancaster Press, Inc. in [Lancaster, Pa .
Written in English

    Subjects:
  • Radioactivity.,
  • Europium.,
  • Strontium.,
  • Yttrium.

  • Edition Notes

    Statementby Kasimir Fajans and David W. Stewart. Part II: Induced radioactivity in strontium and yttrium; nuclear isomers in strontium, by David W. Stewart ...
    ContributionsStewart, David Wylie, 1914- joint author.
    Classifications
    LC ClassificationsQC721 .F3
    The Physical Object
    Pagination1 p. l., 625-632 p.
    Number of Pages632
    ID Numbers
    Open LibraryOL184011M
    LC Control Numbera 42004528
    OCLC/WorldCa30098777

      Radioactive isotopes are prepared in the lab using bombardment reactions to convert a stable nucleus into one which is radioactive. Positron (a particle with the same mass as an electron, but a charge of +1 instead of -1) emission isn't observed in natural radioactivity, but it is a common mode of decay in induced radioactivity. The central part of the track, where most of the energy is deposited, has a radial extension of only a few nanometers, while a lower energy is deposited at a larger distance by energetic δ-rays. Thus, each heavy ion will produce a nanochannel in neighboring cells in a tissue or organ, a situation that makes the concept of low dose itself flawed.

    Radiation-induced cataractogenesis: a critical literature review for the interventional radiologist. Cardiovasc Interv Radiol ; – Crossref, Medline, ISI, Google Scholar: 6. Bitarafan Rajabi A, Noohi F, Hashemi H, Haghjoo M, Miraftab M, Yaghoobi N, et al. Ionizing radiation-induced cataract in interventional cardiology staff. > Download: Council Directive /59/Euratom of 5 December laying down basic safety standards for protection against the dangers arising from exposure to ionising radiation, and repealing Directives 89//Euratom, 90//Euratom, 96/29/Euratom, 97/43/Euratom and //Euratom, Official Journal of the European Union L13, Vol. 57,

    For a cumulative dose of between 50 and 60 milligray or mGy (mGy is a unit of estimated absorbed dose of ionizing radiation) to the head, the investigators reported a threefold increase in the risk of brain tumors; the same dose to bone marrow (the part of the body responsible for generating blood cells) resulted in a threefold increase in the Missing: europium. Effect of sulfate additives on the 60Co gamma ray induced decomposition of lanthanum, europium and terbium nitrates in solid state. Radiation Physics and Chemistry , 69 (2), DOI: /SX(03)


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Part I: Induced radioactivity in europium by Kasimir Fajans Download PDF EPUB FB2

Europium impurities can be incorporated in two forms: divalent and trivalent. Phosphors activated by or find important applications. Exposure to ionizing radiations is known to cause conversion. This conversion is important in understanding thermoluminescence and Cited by:   Highlights This paper presents a study of the laser-induced breakdown spectroscopy of U and Eu in glass matrix.

The emission intensities generated by a UV laser radiation were approximately 30 times stronger than those generated by a visible laser radiation. Limits of detection for U and Eu were ~ and ~ parts per million, by:   This site uses cookies.

By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy. An E-learning tool as living book for knowledge preservation in neutron activation analysis Investigation of variations in cobalt and europium concentrations in concrete to prepare for accelerator decommissioning Authors (first, second and last of 9) Proton induced radioactivity and neutron yields in tantalum and copper using Monte.

The present study involves the development of [3+] ion doped glasses via sol gel method, and recording their laser-induced breakdown (LIBS) spectrum. By making glasses of various molar concentrations of [3+] (,and mole %), we were able to observe the effect of change in concentration of [3+] ions on the.

Thus, the suspected radiation induced cavernomas occurring between ages 10 and 19 years cannot be explained by a higher total number of brain irradiations in this group. In Heidelberg, cavernomas after radiation were seen in 3 out of children aged 10 years or younger (2%) whereas only 2 out of patients older than 10 years showed a.

The radioactivity concentration did not vary much between the surface of the concrete and at a depth of 10 cm. Although the radioactivity concentration near the target was higher than the clearance level for radioactive waste indicated in IAEA RS-G, the mean radioactivity concentration in the walls and floor was lower than the clearance level.

induced a fold higher mutation rate per dose than keV/mm electrons, thus demonstrating the power of ion beams as a mutagen [5, 6]. The detailed character-ization of the carbon ion-induced mutations showed that ion beams can cause large DNA alterations (large deletions, inversions, and translocations) as well as small.

A Eu-doped SrAl 2 O 4 translucent ceramic was successfully synthesized by the spark plasma sintering technique. Comparative studies of the radiation induced luminescence properties were performed. • The synthesized Eu-doped SrAl 2 O 4 translucent ceramic shows the highest transmittance ever.

There is a negative correlation between scintillation and storage luminescence. In the tremendous heat of the explosion, the radioactive debris fused with the local soil into a glassy material named Trinitite.

is a part of our laboratory Eu half-life T, the induced. (UV) radiation, charged particle (ionizing) radiation, plasma, surface charging and arcing, temperature extremes, thermal cycling, impacts from micrometeoroids and orbital debris (MMOD), and environment‑induced contamination.

In terms of materials degradation in space, the low‑Earth orbit (LEO) environment, defined. Volume I, Section 5 5 NATURAL AND INDUCED ENVIRONMENTS {A} For a description of the notations, see Acceleration Regimes.

This section contains the following topics: Atmosphere Microgravity Acceleration Acoustics Vibration Deleted Radiation Thermal Environment Combined Environmental Effects. See the video clips associated with this section.

The radioactivity of all radioactive waste weakens with time. All radionuclides contained in the waste have a half-life — the time it takes for half of the atoms to decay into another ally, all radioactive waste decays into non-radioactive elements (i.e., stable nuclides).Since radioactive decay follows the half-life rule, the rate of decay is inversely proportional to the.

Chem. Soc. All Publications/Website. OR SEARCH CITATIONS. Radiation - Radiation - Artificial sources: In addition to natural background radiation, people are exposed to radiation from various man-made sources, the largest of which is the application of X rays in medical diagnosis.

Although the doses delivered in different types of X-ray examinations vary from a small fraction of a mGy to tens of mGy (Table 7), the average annual dose per capita from.

Radioactivity, property exhibited by certain types of matter of emitting energy and subatomic particles spontaneously. It is, in essence, an attribute of individual atomic nuclei.

Radioactive decay is a property of several naturally occurring elements as well as of artificially produced isotopes of the elements. As the number of cancer survivors grows, prediction of radiotherapy-induced second cancer risks becomes increasingly important.

Because the latency period for solid tumors is long, the risks of recently introduced radiotherapy protocols are not yet directly measurable. In the accompanying article, w.

Get this from a library. Radiation-induced changes in microstructure: 13th international symposium (part I): a symposium. [F A Garner; N H Packan; A S Kumar; ASTM Committee E on Nuclear Technology and Applications.;].

Atmospheric radiation environment. The cascades of elementary particles and electromagnetic radiation are produced in the Earth’s atmosphere when a primary cosmic ray (of extraterrestrial origin) enters the atmosphere [].The term cascade means that the incident particle (generally a proton, a nucleus, an electron or a photon) strikes a molecule in the air so as to produce many high.

Radiation-induced optic neuropathy (RION) is a rare but usually devastating side effect of radiotherapy for NPC. The most frequent clinical symptoms of RION typically present with sudden, painless, irreversible vision loss in one or both eyes after radiotherapy, and occur most commonly from 3 months to more than 9 years after radiotherapy.

Purpose: Dose assessment plays an important role in case of radiological accidents and can be performed by scoring structural changes of chromosome morphology induced in cells by ionizing radiation. The results of such a test are biased by scorer experience, therefore, simple to learn assays are recommended to be used when fast analysis of a large amount of data is needed.Zamulaeva I, Matchuk O, Selivanova E, Makarenko S, Andreev V, Kaprin A Regularities and mechanisms of radiation effects on cancer stem cells in vitro and in vivo.- Rosemann M.

Radiation-induced aging and genetic instability of mesenchymal stem cells: An issue for late health effects?.-V. Laws of evolution.-Koonin Eu.Pb( Bi) Relative to Eu in the 39 to keV Region.

Bi of the thorium series (half-life, m) has a keV gamma with % spectral abundance associated with its alpha decay. Ra and U Relative to Eu in the keV Region.