273 research outputs found

    Law 96 of 1992

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    The Crime of Product Counterfeiting: A Legal Analysis of the Usage of State-Level Statutes

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    This legal analysis of the state-level trademark counterfeiting criminal enforcement framework in the United States (“U.S.”) scrutinizes the use and non-use of state statutes to prosecute and convict trademark counterfeiters. Relying on state-level appellate court cases and conviction data, we found: (1) states inconsistently use and interpret criminal anti-counterfeiting statutes across the U.S.; and (2) strategies for building evidence in trademark counterfeiting criminal cases are strongest when based on cooperation with the victim (trademark owner). Based on our findings, to improve state-level anti-counterfeiting efforts, we recommend several best practices: Adoption of specific criminal trademark counterfeiting statutes if states do not already have a statute; Continued involvement and testimony by brand owners to distinguish between counterfeit and genuine product; and Continued and expanded collaboration and educational efforts between law enforcement, prosecutors, private investigators, and brand owners regarding trademark counterfeiting, as well as the potential danger to the health and safety of the public and possible connections to organized crime and terrorism

    Differential cross sections for muonic atom scattering from hydrogenic molecules

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    The differential cross sections for low-energy muonic hydrogen atom scattering from hydrogenic molecules are directly expressed by the corresponding amplitudes for muonic atom scattering from hydrogen-isotope nuclei. The energy and angular dependence of these three-body amplitudes is thus taken naturally into account in scattering from molecules, without involving any pseudopotentials. Effects of the internal motion of nuclei inside the target molecules are included for every initial rotational-vibrational state. These effects are very significant as the considered three-body amplitudes often vary strongly within the energy interval 0.1\lesssim{}0.1 eV. The differential cross sections, calculated using the presented method, have been successfully used for planning and interpreting many experiments in low-energy muon physics. Studies of μ\mu^{-} nuclear capture in pμp\mu and the measurement of the Lamb shift in pμp\mu atoms created in H2_2 gaseous targets are recent examples.Comment: 21 pages, 13 figures, submitted to Phys. Rev.

    Design and operation of a cryogenic charge-integrating preamplifier for the MuSun experiment

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    The central detector in the MuSun experiment is a pad-plane time projection ionization chamber that operates without gas amplification in deuterium at 31 K; it is used to measure the rate of the muon capture process μ+dn+n+νμ\mu^- + d \rightarrow n + n + \nu_\mu. A new charge-sensitive preamplifier, operated at 140 K, has been developed for this detector. It achieved a resolution of 4.5 keV(D2_2) or 120 ee^- RMS with zero detector capacitance at 1.1 μ\mus integration time in laboratory tests. In the experimental environment, the electronic resolution is 10 keV(D2_2) or 250 ee^- RMS at a 0.5 μ\mus integration time. The excellent energy resolution of this amplifier has enabled discrimination between signals from muon-catalyzed fusion and muon capture on chemical impurities, which will precisely determine systematic corrections due to these processes. It is also expected to improve the muon tracking and determination of the stopping location.Comment: 18 pages + title page, 13 figures, to be submitted to JINST; minor corrections, added one reference, updated author lis

    Measurement of the Resonant dμtd\mu t Molecular Formation Rate in Solid HD

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    Measurements of muon-catalyzed dt fusion (dμt4He+n+μd\mu t \to ^4He+n+\mu^-) in solid HD have been performed. The theory describing the energy dependent resonant molecular formation rate for the reaction μt\mu t + HD [(dμt)pee]\to [(d\mu t)pee]^* is compared to experimental results in a pure solid HD target. Constraints on the rates are inferred through the use of a Monte Carlo model developed specifically for the experiment. From the time-of- flight analysis of fusion events in 16 and 37 μgcm2\mu g\cdot cm^{-2} targets, an average formation rate consistent with 0.897±\pm(0.046)stat±_{stat}\pm (0.166)syst_{syst} times the theoretical prediction was obtained.Comment: 4 pages, 5 figure

    Muon Catalyzed Fusion in 3 K Solid Deuterium

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    Muon catalyzed fusion in deuterium has traditionally been studied in gaseous and liquid targets. The TRIUMF solid-hydrogen-layer target system has been used to study the fusion reaction rates in the solid phase of D_2 at a target temperature of 3 K. Products of two distinct branches of the reaction were observed; neutrons by a liquid organic scintillator, and protons by a silicon detector located inside the target system. The effective molecular formation rate from the upper hyperfine state of μd\mu d and the hyperfine transition rate have been measured: λ~(3/2)=2.71(7)stat.(32)syst.μ/s\tilde{\lambda}_(3/2)=2.71(7)_{stat.}(32)_{syst.} \mu/s, and λ~(3/2)(1/2)=34.2(8)stat.(1)syst.μ/s\tilde{\lambda}_{(3/2)(1/2)} =34.2(8)_{stat.}(1)_{syst.} \mu /s. The molecular formation rate is consistent with other recent measurements, but not with the theory for isolated molecules. The discrepancy may be due to incomplete thermalization, an effect which was investigated by Monte Carlo calculations. Information on branching ratio parameters for the s and p wave d+d nuclear interaction has been extracted.Comment: 19 pages, 11 figures, submitted to PRA Feb 20, 199
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