60 research outputs found

    An analysis of carbon 14 radiation detection systems

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    Carbon 14 radiation detection systems for studying microorganisms in Martian soil

    Calculated gamma ray response characteristics of semiconductor detectors

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    A Monte Carlo computer program has been used to calculate characteristics of the response of fully depleted silicon and germanium radiation detectors to monoenergetic gamma rays. Data for total absorption probability, intrinsic efficiency, escape peak efficiency and pulse height spectra are presented as functions of detector thickness and photon energy. Other parameters of interest in analysing detector response are also given. The results of a second Monte Carlo calculation of electron migration in silicon and germanium are employed to account for the leakage of secondary electrons from the detector volume. Bremsstrahlung energy loss by electrons is also simulated. The calculations are expected to be applicable in those cases in which secondary electron energies do not exceed 2 MeV. Comparison with experiment shows good agreement within this limitation.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/33414/1/0000815.pd

    Mediation and the Best Interests of the Child from the Child Law Perspective

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    What is the best interests of the child in family mediation and is mediation in the best interests of the child? In this article, I use child law and the United Nations Convention on the Rights of the Child combined with mediation theory to discuss these questions. Both mediation and the best interests of the child are open for multiple interpretations. Using facilitative and evaluative mediation theory and the legal concept ‘the best interests of the child’, I explore and compare the understandings of these concepts as they apply to family mediation. This includes a discussion of the advantages and disadvantages of facilitative as well as evaluative mediation orientations in terms of protecting the best interests of the child. Finnish court-connected family mediation is a combination of both mediation orientations, and the mediator is obliged to secure the best interests of the child. From a theoretical point of view, this seems to be a challenging combination.Peer reviewe

    Updated Apollo 15 Laser Ranging Retro Reflector (300 corner) pointing analysis for Hadley Rille

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    This report summarizes the results of the Apollo 15 LRRR pointing analysis conducted for the final site coordinates specified for Hadley Rille and for the planned prime and possible contingency deployment times. The data presented supersedes that given for the Hadley Rille site in ATM-933.prepared by K. Wainio

    Apollo 14 Laser Ranging Retro Reflector pointing analysis, Fra Mauro Site

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    The results of the LRRR pointing analysis conducted for the new Apollo 14 lunar landing site (Fra Mauro) are presented. The analysis provides parameters for the design of the LRRR alignment mechanism.prepared by K. Wainio

    Apollo 15 Laser Ranging Retro Reflector (300 Corner) pointing analysis

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    This report summarizes the results of the Apollo 15 LRRR (300 Corner) Pointing Analysis. This analysis provides the parameter values for the array tilt angle and shadow mark angle, each of which are necessary to properly align the experiment on the lunar surface. These parameters are used to set the suncompass plate angle, the leveling leg stop and leg length and the suncompass shadow mark settings. Three landing sites were analyzed: the primary site, Hadley Rille and two potential alternate sites, Marius Hills and Tycho.prepared by K. Wainio

    Apollo 14 Laser Ranging Retro Reflector pointing analysis

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    The results of the Pointing Analysis conducted for the Apollo 14 LRRR Experiment are presented. The analysis provides parameters for the design of the LRRR alignment mechanisms. The Littrow site was the basis for the analysis.prepared by K. Wainio
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