9,615 research outputs found

    Far Field Monitoring of Rogue Nuclear Activity with an Array of Large anti-neutrino Detectors

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    The result of a study on the use of an array of large anti-neutrino detectors for the purpose of monitoring rogue nuclear activity is presented. Targeted regional monitoring of a nation bordering large bodies of water with no pre-existing legal nuclear activity may be possible at a cost of about several billion dollars, assuming several as-yet-untested schemes pan out in the next two decades. These are: (1) the enabling of a water-based detector to detect reactor anti-neutrinos by doping with GdCl3_3; (2) the deployment of a KamLAND-like detector in a deep-sea environment; and (3) the scaling of a Super-Kamiokande-like detector to a size of one or more megatons. The first may well prove feasible, and should be tested by phase-III Super-Kamiokande in the next few years. The second is more of a challenge, but may well be tested by the Hanohano collaboration in the coming decade. The third is perhaps the least certain, with no schedule for construction of any such device in the foreseeable future. In addition to the regional monitoring scheme, several global, untargeted monitoring schemes were considered. All schemes were found to fail benchmark sensitivity levels by a wide margin, and to cost at least several trillion dollars.Comment: 17 pages, 8 figures, proceedings for Neutrino Sciences 2005, submitted to Earth, Moon, and Planet

    Magnetism in meteorites

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    An overview is presented of magnetism in meteorites. A glossary of magnetism terminology followed by discussion of the various techniques used for magnetism studies in meteorites are included. The generalized results from use of these techniques by workers in the field are described. A brief critical analysis is offered

    Solar System Processes Underlying Planetary Formation, Geodynamics, and the Georeactor

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    Only three processes, operant during the formation of the Solar System, are responsible for the diversity of matter in the Solar System and are directly responsible for planetary internal-structures, including planetocentric nuclear fission reactors, and for dynamical processes, including and especially, geodynamics. These processes are: (i) Low-pressure, low-temperature condensation from solar matter in the remote reaches of the Solar System or in the interstellar medium; (ii) High-pressure, high-temperature condensation from solar matter associated with planetary-formation by raining out from the interiors of giant-gaseous protoplanets, and; (iii) Stripping of the primordial volatile components from the inner portion of the Solar System by super-intense solar wind associated with T-Tauri phase mass-ejections, presumably during the thermonuclear ignition of the Sun. As described herein, these processes lead logically, in a causally related manner, to a coherent vision of planetary formation with profound implications including, but not limited to, (a) Earth formation as a giant gaseous Jupiter-like planet with vast amounts of stored energy of protoplanetary compression in its rock-plus-alloy kernel; (b) Removal of approximately 300 Earth-masses of primordial gases from the Earth, which began Earth's decompression process, making available the stored energy of protoplanetary compression for driving geodynamic processes, which I have described by the new whole-Earth decompression dynamics and which is responsible for emplacing heat at the mantle-crust-interface at the base of the crust through the process I have described, called mantle decompression thermal-tsunami; and, (c)Uranium accumulations at the planetary centers capable of self-sustained nuclear fission chain reactions.Comment: Invited paper for the Special Issue of Earth, Moon and Planets entitled Neutrino Geophysics Added final corrections for publicatio

    The Relationship of Lifestyle and Psychological Birth Order with Career Decision Self-Efficacy

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    ABSTRACT THE RELATIONSHIP OF LIFESTYLE AND PSYCHOLOGICAL BIRTH ORDER WITH CAREER DECISION SELF-EFFICACY by Ronald M. Herndon Over the course of the last several decades Adlerians have demonstrated the vocational utility of Individual Psychology and the constructs of lifestyle and psychological birth order in determining career interests, preferences, and choices (Watkins, 1984a; Watts & Engels, 1995). However, these constructs have not been examined in terms of their relationship to career decision self-efficacy (CDSE). This study examined the relationship of the Adlerian lifestyle and psychological birth order constructs with CDSE among undergraduates (N = 156) at a major southeastern university. Participants were administered a survey packet containing a demographic questionnaire, the BASIS-A Inventory, the White-Campbell Psychological Birth Order Inventory (PBOI), and the Career Decision Self-Efficacy Scale (CDSES). The BASIS-A Inventory and the PBOI are instruments measuring the Adlerian constructs of lifestyle and psychological birth order. Both of these instruments do not yield a singular overall score for these constructs. Rather, scores are reported as scale totals corresponding to the factors associated with these constructs. The CDSES is an instrument measuring career decision self-efficacy, which yields scores for the overall measure as well as the scales corresponding to the factors associated with the construct. Results indicate that many statistically significant relationships exist among the factors of lifestyle with the factor scales of CDSE and overall CDSE, including belonging/social interest (BSI) and striving for perfection (P) subscale. Further, the P subscale proved to be a statistically significant predictor of overall CDSE (ρ \u3c .05). The factors of psychological birth order had fewer statistically significant relationships with CDSE and associated factors and did not demonstrate statistically significant predictive ability with CDSE. The significant relationships and predictive ability of specific factors of the lifestyle construct, as well as the significant relationships of psychological birth order, found in this study have implications for increasing the theoretical knowledge base and vocational applicability of Individual Psychology as well as gaining further practical understanding of utilizing these constructs in counseling and vocational assessment

    Thermomagnetic analysis of meteorites. 3: C3 and C4 chondrites

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    Thermomagnetic analysis on all of the C3 and C4 chondrites, conducted under conditions of controlled oxygen fugacity, indicates the presence of a thermally unstable component in at least 5 of the C3 chondrites which upon heating results in magnetite production. This unstable component is most likely troilite (FeS). The presence of the unstable substance may affect the estimation of paleointensities in meteorites which contain it. Our results indicate that Grosnaja, Ornans, Kainsaz, Felix, and Warrenton are likely to be less complicated for paleointensity determinations than the other C3 chondrites. Both C4 chondrites should lead to reliable results

    Thermomagnetic analysis of meterorites. 4: Ureilites

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    Samples of all available ureilites have been analyzed thermomagnetically. For three of the six (Dyalpur, Goalpara and Havero) evidence was found for only low-nickel metallic-iron as the magnetic component and the (saturation magnetization vs, temperature) curves were reversible. In the Novo Urei ureilite, magnetite in addition to low-nickel metallic-iron was indicated and again the Js-T curve was reversible. For the two badly weathered ureilites, Dingo Pup Donga and North Haig, indication was also found that both initial magnetite and low-nickel metallic-iron were present. However, the Js-T curves were somewhat irreversible and the final saturation magnetization was 20% and 50% greater than initially for North Haig and Dingo Pup Donga, respectively. This behavior is interpreted to be the result of magnetite production from a secondary iron oxide during the experiment

    Thermomagnetic analysis of meteorites, 2: C2 chondrites

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    Samples of all eighteen of the known C2 chondrites were analyzed thermomagnetically. For eleven of these, initial Fe3O4 content is low(generally 1%) and the J sub s-T curves are irreversible. The heating curves show variable and erratic behavior, whereas the cooling curves appear to be that of Fe3O4. The saturation moment after cooling is greater (up to 10 times larger) than it is initially. This behavior is interpreted to be the result of the production of magnetite from a thermally unstable phase--apparently FeS. Four of the remaining 7 C2 chondrites contain Fe3O4 as the only significant magnetic phase: initial magnetite contents range from 4 to 13 percent. The remaining three C2 chondrites contain iron or nickel-iron in addition to Fe3O4. These seven C2 chondrites show little evidence of the breakdown of a thermally unstable phase
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