This study of atomic-bomb literature on Hiroshima will be through a critical lens, largely through postcolonial theory and reader-response criticism. It will be a discussion on the social and political implications behind the popularization of certain works. The discussed texts will not necessarily be written by the Japanese or by survivors of the atomic bomb: in the first case, I will be examining authorial intent and its relation to the intended reader responses from the implied American audience to study perpetuations of propaganda after the war. This paper will also be examining the interlingual translatability of psychological and physical trauma surrounding the atomic bomb and will be exploring the capacities of language to express an emotional and often sensitive topic.

Call number: LD2668 .T4 1963 B34 / Master of Science

Master of Science / Department of Mechanical and Nuclear Engineering / William L. Dunn / This report investigates the feasibility of a standoff interrogation method to identify nitrogen-rich explosive samples shielded by other materials (“clutter”) using neutron beams from Cf-252 and deuterium-tritium (D-T) generator sources. Neutrons from the beams interact with materials in the target to produce inelastic-scatter gamma rays, and, after slowing down to thermal energies, prompt-capture gamma rays. By detection of these gamma rays, a response vector is formed that is used to calculate a figure-of-merit, whose value is dependent upon the contents of the target. Various target configurations, which include an inert-material shield and a sample that may or may not be explosive, were simulated using the MCNP5 code. Both shielding and collimation of 14.1-MeV neutron beams were simulated to produce effective neutron beams for target interrogation purposes and to minimize dose levels. Templates corresponding to particular target scenarios were generated, and their effectiveness at nitrogen-rich explosive identification was explored. Furthermore, methods were proposed yielding more effective templates including grouping target responses by density and composition. The results indicate that neutron-based interrogation has potential to detect shielded nitrogen-rich explosives. The research found that using a tiered filter approach, in which a sample must satisfy several template requirements, achieved the best results for identifying the explosive cyclonite (RDX). A study in which a 14.1-MeV neutron beam irradiated a target containing a shielded sample, which could either be explosive (RDX) or inert, yielded no false negatives and only 2 false positives over a large parameter space of clutter-sample combination.

No description available.

Combustion monitoring in internal combustion engine or burners is a difficult task due to the harsh environment for any sensor, therefore optical diagnostics are very attractive for these types of application. Chemiluminescence measurement is one of the most common and most promising ways of implementing optical diagnostics in combustion monitoring applications because the measured signal, emitted naturally with combustion, has potential to be an indirect measure of combustion relevant parameters, such as the equivalence ratio and heat release rate. In hydrocarbon combustion, the most common chemiluminescence emitters are OH*, CH*, C₂* and CO₂*. This thesis focuses on the measurement of OH* and CH* chemiluminescence, whose sensitivities are affected by temperature, pressure, equivalence ratio and stretch rate. To measure OH* and CH* chemiluminescence, an existing constant volume combustion vessel has been refurbished, along with the sub-systems for fuel delivery, ignition, LabView control, data acquisition, and optical detection using a pair of photo-multiplier tubes (PMTs), interference filters and a series of apertures. Modelling accurately the optical setup is essential for the CH* and OH* chemiluminescence measurements in the combustion bomb. To achieve this goal, a narrow field of view system has been selected as it enables the elimination of photons scattered from the internal surfaces. A calibration of the PMTs converts the measurements into the absolute OH* and CH* chemiluminescence in terms of watt. Measurements from a combustion bomb are versatile and accurate since it determines the OH* and CH* chemiluminescence as a function of temperature and pressure from a single experiment. The calculation of the normalised OH* and CH* chemiluminescence (against mass burned rate) was based on a multi-zone combustion model and measured pressure record from the vessel. NIICS (Normalised Intensity Integrated Calculation System) has been created to fetch data from the multi-zone model, the optical model, and experimental measurements, to match them up by interpolation and to normalise the OH* and CH* chemiluminescence. NIICS also allows the user to select data uncorrupted by the noise and heat transfer. The chosen data (in this case, CH*/OH* chemiluminescence ratio) have been fitted using a multi-variate fitting and correlation analysis. This formulation can be used to indicate the local equivalence ratio from premixed methane / air and iso-octane / air flames over the local pressure range 0.5 – 20 bar, the unburned gas temperature range 450 – 600 K, and equivalence ratio range 0.8 – 1.1. The chemical-kinetic mechanisms of the absolute OH* and CH* chemiluminescence have been investigated by studying the influence of the equivalence ratio, unburned gas temperature, and local pressure. It should be pointed out that two confounding observations occur, i.e. a discontinuity in the chemiluminescence along the isentropes, and chemiluminescence continuing after the end of combustion. This led to the further spectroscopic analysis. This study concluded with spectroscopic measurements using an Ocean Optics spectrometer and a Princeton ICCD spectrometer. It was found that the broadband CO₂* is responsible for the two disconcerting observations. In addition, CH* chemiluminescence has been shown to be very faint from premixed laminar methane / air flames; hence the CH*/OH* formula in essence quantifies the CO₂*/OH* ratio as a function of pressure, temperature, and equivalence ratio. The ‘CH* chemiluminescence’ can characterise the background CO₂*, so as to provide a practical way to probe the feasibility of absolute OH* as an indicator of combustion relevant parameters in the future.

This thesis explores Ralston Crawford’s canvases painted after witnessing the events of Operation Crossroads at the Bikini Atoll in 1946. Commissioned by Fortune, the artist provides the viewer with a unique and captivating view of the destruction wrought by atomic weaponry. Through a careful look at Crawford’s relationship with Fortune, Edith Halpert’s Downtown Gallery, and Crawford’s artistic contemporaries, this thesis positions the paintings within the art historical and cultural context of the mid-twentieth century and asserts their importance to the history of the Atomic Age. The thesis traces Crawford’s artistic development and his use of an Americanized Cubist language. In addition, the thesis looks closely at the rich cultural fabric of the postwar era and evaluates Crawford’s position in the American Art scene. / text

A Radiological Dispersal Device (RDD) is any device that releases radioactive material into the environment (e.g. Dirty Bomb). Depending on the size of the explosion, location, and the weather conditions the affected area could be several city blocks. In such an event there could be hundreds, even thousands of contaminated victims seeking medical treatment. One concern in the healthcare industry is the uncertainty of the level of radiation exposure to the healthcare providers from these contaminated patients. The intention of this study is to estimate the levels of skin contamination for victims arriving at the hospital needing conventional medical treatment. Given a skin contamination of the victim the effective dose rate to the healthcare providers can be estimated in certain scenarios. The effective dose rate will determine how long the healthcare provider would be able to care for the victims.

第22回名古屋大学年代測定総合研究センターシンポジウム平成21(2009)年度報告

An RDD attack against the U.S. is something America needs to prepare against. If such an event occurs the ability to quickly identify the source of the radiological material used in an RDD would aid investigators in identifying the perpetrators. Spent fuel is one of the most dangerous possible radiological sources for an RDD. In this work, a forensics methodology was developed and implemented to attribute spent fuel to a source reactor. The specific attributes determined are the spent fuel burnup, age from discharge, reactor type, and initial fuel enrichment. It is shown that by analyzing the post-event material, these attributes can be determined with enough accuracy to be useful for investigators. The burnup can be found within a 5% accuracy, enrichment with a 2% accuracy, and age with a 10% accuracy. Reactor type can be determined if specific nuclides are measured. The methodology developed was implemented into a code call NEMASYS. NEMASYS is easy to use and it takes a minimum amount of time to learn its basic functions. It will process data within a few minutes and provide detailed information about the results and conclusions.

Thesis (M.A.)--Florida State University, 2006. / Advisor: Max Paul Friedman, Florida State University, College of Arts and Sciences, Dept. of History. Title and description from dissertation home page (viewed June 7, 2006). Document formatted into pages; contains v, 94 pages. Includes bibliographical references.