1,405 research outputs found
A summary of major activities of the UNH and NRL groups
The major activities of the SMM GRS team members at the University of New Hampshire and the Naval Research Laboratory since the last semi-annual report are summarized. An updated list of published papers and invited papers or contributed papers presented at scientific meetings is provided
Spillovers and Taxes: What Drives Strategic Competition in Environmental Policies?
It has been widely shown in the literature that states act strategically when forming environmental policies. However, this strategic interaction could be the result of two different effects. In the hypothesis of tax competition, states strategically set environmental standards in order to attract a fixed amount of mobile capital. In a spillover model, states set environmental policies strategically in response to pollution that spills over from other states. The previous literature has been unable to separate the two effects. Using weighting matrices specifically tailored to each form of competition, I am able to separate the effects, showing that tax competition explains 38% of interaction in environmental policy while spillover competition explains 62%.Tax Competition, Spillovers, Environmental Policy
Electric Dipole Moments: A Global Analysis
We perform a global analysis of searches for the permanent electric dipole
moments (EDMs) of the neutron, neutral atoms, and molecules in terms of six
leptonic, semileptonic, and nonleptonic interactions involving photons,
electrons, pions, and nucleons. Translating the results into fundamental
CP-violating effective interactions through dimension six involving Standard
Model particles, we obtain rough lower bounds on the scale of beyond the
Standard Model CP-violating interactions ranging from 1.5 TeV for the electron
EDM to 1300 TeV for the nuclear spin-independent electron-quark interaction. We
show that future measurements involving systems or combinations of systems with
complementary sensitivities to the low-energy parameters may extend the mass
reach by an order of magnitude or more.Comment: 15 pages, 1 figur
The gamma-ray spectrometer experiment on the solar maximum mission satellite
The major activities summarized include: Gamma-Ray Spectrometer (GRS) instrument response and flight operation; solar flare studies; cosmic gamma-ray studies; summary of computer operations; search for flare-precursor protons; diffuse galactic annihilation radiation; cosmic ray bursts; atmospheric gamma ray spectrum; gamma ray line emission from supernovae and novae; improved angular resolutions using Earth occultation; and production processing of NASA IPD data. In addition, an updated list of published papers and invited papers or contributed papers presented at scientific meetings is provided
Investigation of Energy Levels in Foil Excited Atomic Beams Semiannual Status Report, 1 Feb. - 31 Jul. 1966
Relative population and mean lifetimes of levels in hydrogen and helium atomic beams using foil method of excitatio
Study of SMM flares in gamma-rays and neutrons
This report summarizes the results of the research supported by NASA grant NAGW-2755 and lists the papers and publications produced through the grant. The objective of the work was to study solar flares that produced observable signals from high-energy (greater than 10 MeV) gamma-rays and neutrons in the Solar Maximum Mission (SMM) Gamma-Ray Spectrometer (GRS). In 3 of 4 flares that had been studied previously, most of the neutrons and neutral pions appear to have been produced after the 'main' impulsive phase as determined from hard x-rays and gamma-rays. We, therefore, proposed to analyze the timing of the high-energy radiation, and its implications for the acceleration, trapping, and transport of flare particles. It was equally important to characterize the spectral shapes of the interacting energetic electrons and protons - another key factor in constraining possible particle acceleration mechanisms. In section 2.0, we discuss the goals of the research. In section 3.0, we summarize the results of the research. In section 4.0, we list the papers and publications produced under the grant. Preprints or reprints of the publications are attached as appendices
Northeast Ohio Citizens Speak: Individual Citizen Interviews Data Analysis Final Report
Voices & Choices is an 18-month public engagement process that has involved tens of thousands of citizens and leaders across Northeast Ohio in creating a shared action agenda for revitalizing the region’s economy. In this process, Voices & Choices offered the opportunity for citizens to interview each other, and capture in writing their opinions, values and vision of a better future. This document captures some of the essence of those citizen interviews
Neutron-decay Correlation Measurements with Polarized and Pulsed Beams
AbstractNeutron-decay polarization correlations arise due to the interference of amplitudes with different transformation properties, i.e. V, A, S, P, and T corresponding to vector, axial vector, scalar, pseudoscalar and tensor. Measurements of a number of these correlations are used to constrain fundamental parameters of the Standard Model as well as probe new physics. Recent and future efforts that I will discuss include time-reversal violating correlations, e.g. the D coefficient and its relation to the neutron EDM as well as the beta-neutrino correlation, with emphasis on systematic errors that could arise from residual polarization that can be measured with a pulsed neutron beam such as provided by the SNS or ESS
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