DOE SCIENCE NEWS SOURCE - RESEARCH

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Potassium-40 usually decays to calcium-40, but about 10 percent of the time it decays to argon-40 through electron capture. One variant of this decay path ends in argon-40 in its ground state.

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Potassium-40 usually decays to calcium-40, but about 10 percent of the time it decays to argon-40 through electron capture. One variant of this decay path ends in argon-40 in its ground state.

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Conventional metals cannot conduct light in their interiors, but scientists have discovered that in the quantum metal ZrSiSe, electrons can give rise to plasmons.

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Conventional metals cannot conduct light in their interiors, but scientists have discovered that in the quantum metal ZrSiSe, electrons can give rise to plasmons.

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The quark Sivers function describes much of the physics of how quarks are distributed in a proton whose rotation is perpendicular to its direction of motion. This function shows whether more quarks in the proton move to the right than to the left of the plane created by the proton’s velocity and the direction of the proton’s rotation (spin) axis.

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The quark Sivers function describes much of the physics of how quarks are distributed in a proton whose rotation is perpendicular to its direction of motion. This function shows whether more quarks in the proton move to the right than to the left of the plane created by the proton’s velocity and the direction of the proton’s rotation (spin) axis.

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Research led by scientists at the Department of Energy’s Oak Ridge National Laboratory has demonstrated that small changes in the isotopic content of thin semiconductor materials can influence their optical and electronic properties, possibly opening the way to new and advanced designs with the semiconductors.

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X-ray bursts occur on the surface of a neutron star as it absorbs material from a companion star. This absorption initiates a cascade of thermonuclear reactions that create atoms of heavy chemical elements on the surface of a neutron star. Researchers have directly measured one of these reactions, finding it to be four times higher than the previous direct measurement.

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X-ray bursts occur on the surface of a neutron star as it absorbs material from a companion star. This absorption initiates a cascade of thermonuclear reactions that create atoms of heavy chemical elements on the surface of a neutron star. Researchers have directly measured one of these reactions, finding it to be four times higher than the previous direct measurement.