Search Results - "Hoppe, Eric W."

Gas-phase ion-molecule interactions in a collision reaction cell with triple quadrupole-inductively coupled plasma mass spectrometry: Investigations with N2O as the reaction gas by Harouaka, Khadouja, Allen, Caleb, Bylaska, Eric, Cox, Richard M, Eiden, Gregory C., di Vacri, Maria Laura, Hoppe, Eric W., Arnquist, Isaac J.

“…Nitrous oxide (N2O) was used as a reaction gas to investigate the gas-phase ion-molecule interactions using the Agilent 8900 QQQ-ICP-MS. A multi-element…”
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The importance of ion kinetic energy for interference removal in ICP-MS/MS by French, Amanda D., Melby, Kali M., Hobbs, Kirby P., Cox, Richard M, Eiden, Greg, Hoppe, Eric W., Arnquist, Isaac J., Harouaka, Khadouja

“…The effect of ion kinetic energy on gas phase ion reactivity with ICP-MS/MS was investigated in order to explore tuning strategies for interference removal…”
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The quick and ultrasensitive determination of K in NaI using inductively coupled plasma mass spectrometry by Arnquist, Isaac J., Hoppe, Eric W.

“…A highly sensitive, novel and quick assay method utilizing inductively coupled plasma mass spectrometry was developed for the determination of K in NaI powders…”
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Gas‐Phase Ion‐Molecule Interactions in a Collision Reaction Cell with ICP‐MS/MS: Investigations with CO2 as the Reaction Gas by Harouaka, Khadouja, Melby, Kali, Bylaska, Eric J., Cox, Richard M., Eiden, Gregory C., French, Amanda, Hoppe, Eric W., Arnquist, Isaac J.

“…Carbon dioxide (CO2) was used as a reaction gas to investigate the gas‐phase ion‐molecule interactions using the Agilent 8900 ICP‐MS/MS. A solution containing…”
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Correction to Mass Spectrometric Determination of Uranium and Thorium in High Radiopurity Polymers Using Ultra Low Background Electroformed Copper Crucibles for Dry Ashing by Arnquist, Isaac J, Hoppe, Eric W, Bliss, Mary, Grate, Jay W

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Direct low-energy measurement of 37Ar and 127Xe in a radiotracer gas using low-background proportional counters by Mace, Emily K., Aalseth, Craig E., Day, Anthony R., Hoppe, Eric W., McIntyre, Justin I., Seifert, Allen, Williams, Richard M.

“…A radiotracer gas with a blend of 37 Ar and 127 Xe was created for a gas migration experiment and was characterized at Pacific Northwest National Laboratory…”
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A dry ashing assay method for the trace determination of Th and U in polymers using inductively coupled plasma mass spectrometry by Arnquist, Isaac J., Thomas, May-Lin P., Grate, Jay W., Bliss, Mary, Hoppe, Eric W.

“…This paper discusses the methods developed for determining the radiopurity of high density polyethylene and polyetherketone ketone materials to be considered…”
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Liquid scintillation counting of environmental radionuclides: a review of the impact of background reduction by Douglas, Matthew, Bernacki, Bruce E., Erchinger, Jennifer L., Finn, Erin C., Fuller, Erin S., Hoppe, Eric W., Keillor, Martin E., Morley, Shannon M., Mullen, Crystal A., Orrell, John L., Panisko, Mark E., Warren, Glen A., Wright, Michael E.

“…Liquid scintillation counting (LSC) supports a range of environmental science measurements. At Pacific Northwest National Laboratory, we are constructing an…”
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Assay methods for 238U, 232Th, and 210Pb in lead and calibration of 210Bi bremsstrahlung emission from lead by Orrell, John L., Aalseth, Craig E., Arnquist, Isaac J., Eggemeyer, Tere A., Glasgow, Brian D., Hoppe, Eric W., Keillor, Martin E., Morley, Shannon M., Myers, Allan W., Overman, Cory T., Shaff, Sarah M., Thommasson, Kimbrelle S.

“…Methods for measuring 238 U, 232 Th, and 210 Pb in refined lead are presented. The 238 U and 232 Th concentrations are determined using isotope dilution…”
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Design and construction of a low-background, internal-source proportional counter by Aalseth, Craig E., Day, Anthony R., Hoppe, Eric W., Hossbach, Todd W., Hyronimus, Brian J., Keillor, Martin E., Litke, Kevin E., Mintzer, Esther E., Seifert, Allen, Warren, Glen A.

“…High-purity copper has emerged as a preferred construction material for ultra-low-background HPGe spectrometers and offers excellent bulk radiopurity along…”
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Design and construction of an ultra-low-background 14-crystal germanium array for high efficiency and coincidence measurements by Keillor, Martin E., Aalseth, Craig E., Day, Anthony R., Fast, James E., Hoppe, Eric W., Hyronimus, Brian J., Hossbach, Todd W., Miley, Harry S., Seifert, Allen, Warren, Glen A.

“…Physics experiments, environmental surveillance, and treaty verification techniques continue to require increased sensitivity for detecting and quantifying…”
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Mass spectrometric assay of high radiopurity solid polymer materials for parts in radiation and rare event physics detectors by Arnquist, Isaac J., Hoppe, Eric W., Bliss, Mary, Harouaka, Khadouja, di Vacri, Maria Laura, Grate, Jay W.

“…Plastic dielectric materials are required in radiation and rare event physics detectors as structural parts, insulators, seals, light reflectors, and in…”
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Utilizing metal cation reactions with carbonyl sulfide to remove isobaric interferences in tandem inductively coupled plasma mass spectrometry analyses by French, Amanda D., Melby, Kali M., Cox, Richard M, Bylaska, Eric, Eiden, Gregory C., Hoppe, Eric W., Arnquist, Isaac J., Harouaka, Khadouja

“…Carbonyl sulfide (OCS) was used as a reaction gas to investigate gas phase metal (M+) ion-molecule reactions using the Agilent 8900 inductively coupled plasma…”
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Mass spectrometric analyses of high performance polymers to assess their radiopurity as ultra low background materials for rare event physics detectors by Grate, Jay W., Arnquist, Isaac J., Hoppe, Eric W., Bliss, Mary, Harouaka, Khadouja, di Vacri, Maria Laura, Anguiano, Sonia Alcantar

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Mass spectrometric analyses of high performance polymers to assess their radiopurity as ultra low background materials for rare event physics detectors by Grate, Jay W., Arnquist, Isaac J., Hoppe, Eric W., Bliss, Mary, Harouaka, Khadouja, di Vacri, Maria Laura, Anguiano, Sonia Alcantar

“…The mass concentrations of 232Th and 238U in several strong, unfilled, high performance polymers are reported as measures of their radiopurity. Highly…”
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Mass spectrometric investigations into 3D printed parts to assess radiopurity as ultralow background materials for rare event physics detectors by French, Amanda D., Anguiano, Sonia Alcantar, Bliss, Mary, Christ, Josef W., di Vacri, Maria Laura, Erikson, Rebecca L., Harouaka, Khadouja, Hoppe, Eric W., Grate, Jay W., Arnquist, Isaac J.

“…The mass concentrations of 232Th and 238U in several 3D printing filaments and printed polymer parts are reported as measures of their radiopurity. In order to…”
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Mass spectrometric assay of high radiopurity solid polymer materials for parts in radiation and rare event physics detectors by Arnquist, Isaac J., Hoppe, Eric W., Bliss, Mary, Harouaka, Khadouja, di Vacri, Maria Laura, Grate, Jay W.

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Gas-phase ion-molecule interactions in a collision reaction cell with triple quadrupole-inductively coupled plasma mass spectrometry: Investigations with N2O as the reaction gas by Harouaka, Khadouja, Allen, Caleb J., Bylaska, Eric J., Cox, Richard M., Eiden, Gregory C., di Vacri, Maria Laura, Hoppe, Eric W., Arnquist, Isaac J.

“…Nitrous oxide (N2O) was used as a reaction gas to investigate the gas phase ion-molecule interactions using the Agilent 8900 QQQ-ICP-MS. A multi-element…”
Get full text

Evaluation of SNOLAB background mitigation procedures through the use of an ICP-MS based dust monitoring methodology by di Vacri, M.L., Scorza, S., French, A., Rocco, N.D., Schlieder, T.D., Arnquist, I.J., Hoppe, E.W., Hall, J.

“…Dust particulate fallout on materials in use for rare-event searches is a concerning source of radioactive backgrounds due to the presence of the naturally…”
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Gas‐Phase Ion‐Molecule Interactions in a Collision Reaction Cell with ICP‐MS / MS : Investigations with CO 2 as the Reaction Gas by Harouaka, Khadouja, Melby, Kali, Bylaska, Eric J., Cox, Richard M., Eiden, Gregory C., French, Amanda, Hoppe, Eric W., Arnquist, Isaac J.

“…Carbon dioxide (CO 2 ) was used as a reaction gas to investigate the gas‐phase ion‐molecule interactions using the Agilent 8900 ICP‐MS/MS. A solution…”
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