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Showing 1 to 20 of 87 for “"Argonne"”.
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A comparison of the positive and negative TAU prime partial decay rates for kaons
… positive and negative 3.5 BeV/c beams at the Argonne National Laboratory Zero Gradient Synchrotron to study T' (K+/- -> pi+ pio pio) decays. ...
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Determination of the Helium -6 Nuclear Charge Radius Using High-Resolution Laser Spectroscopy
… of 0.7% in a laser spectroscopic measurement at Argonne National Laboratory. The 6He atoms were produced via the 12C(7Li, 6He)13N reaction at the Argonne Tandem Linac Accelerator System (ATLAS), and were excited to the metastable states by an RF-driven discharge. The spectroscopy was performed on …
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Determination of the Helium-6 Nuclear Charge Radius Using High-Resolusion Laser Spectroscopy
… of 0.7% in a laser spectroscopic measurement at Argonne National Laboratory. The 6He atoms were produced via the 12C(7Li, 6He)13N reaction at the Argonne Tandem Linac Accelerator System (ATLAS), and were excited to the metastable states by an RFdriven discharge. The spectroscopy was performed on …
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Deep inelastic neutron scattering and single particle kinetic energies in condensed noble gases
… at the Intense Pulsed Neutron Source at Argonne National Laboratory was used to measure the dynamic structure factor at values of the wave-vector transfer between 15 and 30 A$\sp{-1}$. Data have been analyzed with resolution techniques, and the single particle kinetic energies have been …
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Measurement of the strong interaction form factor and the charge asymmetry in the decay K0L®pme±n(`n)
An experim.ent has .been performed at the Argonne ZGS which measures the energy dependence of the strong interaction form factor and the charge asymmetry in the decay ~ - ,,+ ei v(v). The events were identified by the observation of an electron shower in a set of shower spark chambers, …
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Nature's Sensors: Using Plants as an Alternative Monitoring Approach for Subsurface Contamination
… monitoring techniques were explored at the Argonne phytoremediation site. The impacts on uncertainty estimation and optimal sampling schemes at the site from the inclusion of plant sampling were evaluated. Four methods were compared while evaluating uncertainty; entropy was found to be the …
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A comparison of CP violation in the decays K0 → π+ π- and K-0 → π+ π-
… of OP violations. An enriched kaon beam at Argonne National Laboratory was used to produce KO (ft) by charge exchange of 850 MeV/c K+ (K-) on complex nuclei. Magnetostrictive wire spark chambers and scintillation counters were used to measure the n+n- rates in the interval from four to …
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A Study of the Omega-Zero Spin-Density Matrix Elements in the Reaction Pi-Minus Proton Goes to Omega-Zero Neutron at 3.65, 4.5, and 5.5 GeV/c
… GeV/c were produced by an internal target at the Argonne National Laboratory Zero Gradient Synchrotron. The values obtained for the WO spin-density matrix elements are inconsistent with the predictions of a simple model which allows for Reggeized p(765) and B(1235) exchange.
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Measurement of spin parameters A and Ann in np and pp elastic scattering at 6 G3V/c
… beam and a polarized proton target at the Argonne ZGS. The recoil proton was measured by a conventional magnetic spectrometer, while the scattered neiitron/proton was detected in a brass-scintillator neutron converter/detector. Clean elastic signals were seen in both reactions. Our results …
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Liquid metal flow in a sharp elbow in a uniform transverse magnetic field
… neutrons. One of the blanket designs proposed in Argonne National Laboratory's Blanket Comparison and Selection Study uses a combination of poloidal and toroidal ducts in order to maximize heat transfer while minimizing net pressure drop. In the design, the poloidal and toroidal ducts meet at …
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Active Measurement of a Micron-Order Gap Under High-Speed and High-Temperature Conditions
… device was developed in-house and tested at Argonne National Laboratories (ANL) to gather in-situ material response of prospective UHTC samples when exposed to a hypersonic regime. An edge detection-based algorithm was developed and used in LabVIEW to monitor the health and operation of the …
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In situ measurement of lattice strain using synchrotron radiation and a conical slit system
… presented in detail. The conical slit system at Argonne National Laboratory’s Advanced Photon Source is utilized to isolate a single grain with an orientation of interest from the highly textured alloy. A total of 39 reflections contribute to the calculation of the strain tensor for each load …
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Green's function Monte Carlo calculations of few-nucleon systems
… the motivation for this potential, called Argonne $v\sb{18},$ as well as the Urbana models of three-nucleon interactions. Our approach for modeling the ground states of nuclear systems begins with the development of a variational wave function. We discuss the basis for our variational wave …
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Cross sections for pi+, pi-, K+, and K- mesons on complex nuclei
… was made at the Zero Gradient Synchrotron at Argonne National Lab. A set of circular scintillation counters measured transmission as a function of angle for each element. Cross sections were then calculated from the observed transmissions. Absorption and diffraction cross sections are given …
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Backward resonance production in pi minus plus proton goes to neutron pi plus pi minus at 8 GeV/c
… target located inside the University of Il1inois~Argonne National Laboratory streamer chamber. The chamber was triggered on the interaction of a fast, forward neutral hadron in thick plate optical spark chambers. A total of 866 events had an acceptable 3-constraint fit to n p ~ nn nand satisfied …
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Multi-state system in a fault tree analsis of a nuclear based thermochemical hydrogen plant
… Atomic Energy of Canada Limited (AECL) and the Argonne National Laboratory (ANL). The safety issues of the Cu-Cl cycle are addressed in this thesis. An investigation of major accident scenarios shows that potential tragedies can be avoided with effective risk analysis and safety management …
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Optical instruments for characterization in the nano-scale
… - 4.8nm. The Optical Slope Measurement System Argonne National Laboratory's Advanced Photon Source (APS-OSMS) is capable of resolving slope errors in X-ray mirrors down to 50 nanoradian. Now the Department of Energy Synchrotron facilities (Advanced Light Source at Lawrence Berkeley National …
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Automated robotics system for nuclear waste handling (hardware and software)
… in the Waste Isolation Pilot Plan (WIPP) at Argonne National Labs West (ANLW). The safety system should both reduce operator error and prevent costly mistakes; The system consists of a computer and accompanying software placed between the control unit and the remote manipulator. The computer …
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Observation of quasi two-body production in pion plus proton goes to neutron plus four charged pions at 8 geV/c
… target inside the University of Illinois/Argonne National Laboratory streamer chamber. The chamber was triggered by the interaction of a fast, forward neutral hadron in thick plate optical spark chambers. Total backward cross sections are derived for the processes pi-P -> N*o (1520)+p°/f°, …
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Backward production in pi minus plus proton goes to neutron pi plus pi minus at 8 GeV/c
… 160,000 pictures in the University of Illinois - Argonne National Laboratory streamer chamber using an 8 GeV/c pion beam. The chamber was triggered by the detection of a fast forward neutral hadron interacting in an array of thick plate optical spark chambers. The dominant feature of the data is …
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