Search Results - "Grabowski, K.S"

Methane sources in gas hydrate-bearing cold seeps: Evidence from radiocarbon and stable isotopes by Pohlman, J.W., Bauer, J.E., Canuel, E.A., Grabowski, K.S., Knies, D.L., Mitchell, C.S., Whiticar, M.J., Coffin, R.B.

“…Fossil methane from the large and dynamic marine gas hydrate reservoir has the potential to influence oceanic and atmospheric carbon pools. However, natural…”
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Novel results on structural investigations of natural minerals of clathrate hydrates by Yousuf, M., Qadri, S.B., Knies, D.L., Grabowski, K.S., Coffin, R.B., Pohlman, J.W.

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Positive ion SIMS-SSAMS for trace analysis of materials by Grabowski, K.S., Groopman, E.E., Rock, B.Y., Imam, M.A.

“…By using a single-stage accelerator mass spectrometer (SSAMS) as a detector for a secondary ion mass spectrometry (SIMS) instrument, spatially resolved trace…”
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Enhanced spatially-resolved trace analysis using combined SIMS–single-stage AMS by Grabowski, K.S., Groopman, E.E., Fahey, A.J.

“…Secondary ion mass spectrometry (SIMS) provides spatially resolved trace analysis of solid materials, but can be complicated by unresolved abundant molecular…”
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Reprint Of: Enhanced spatially-resolved trace analysis using combined SIMS–single-stage AMS by Grabowski, K.S., Groopman, E.E., Fahey, A.J.

“…Secondary ion mass spectrometry (SIMS) provides spatially resolved trace analysis of solid materials, but can be complicated by unresolved abundant molecular…”
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Stability of a hydrogen molecule in a vacancy of palladium hydrides by He, J.H., Dechiaro, L.F., Knies, D.L., Hubler, G.K., Grabowski, K.S., Moser, A.E., Dominguez, D.D., Kidwell, D.A., Hagelstein, P.L.

“…We report our ab-initio calculations of energy states of equilibrium H–H separation in a vacancy of palladium and palladium hydrides at a variety of H/Pd…”
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Trace element AMS at NRL: Initial use of a modified SIMS ion source by Grabowski, K.S., Knies, D.L., Cetina, C.

“…There has been recent interest to attach a high-energy ion accelerator to the output of a secondary ion mass spectrometer (SIMS). NRL has undertaken such an…”
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SIMS–AMS depth profiles for NASA Genesis samples: Preliminary measurements by Cetina, C., Grabowski, K.S., Knies, D.L., Demoranville, L.T.

“…A wide variety of elements present in solar wind were collected during a 2-year space flight by the NASA Genesis Discovery mission. The high-value Genesis…”
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Ion optic calculations and installation of a modified SIMS ion source by Knies, D.L., Grabowski, K.S., Cetina, C.

“…The NRL trace element accelerator mass spectrometer facility has recently added a modified Cameca IMS 6F SIMS instrument as a high-performance ion source. It…”
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Implementing a SIMS ion source on the NRL trace element accelerator mass spectrometer by Knies, D.L., Grabowski, K.S., Cetina, C.

“…The NRL trace element accelerator mass spectrometer facility has recently added a modified Cameca IMS 6F SIMS instrument as a high-performance ion source,…”
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Nanogram amounts of selected rare earth elements measured by AMS by Cetina, C., Knies, D.L., Grabowski, K.S., Berry, A.D., Mowery, R.L.

“…Results are presented from a series of measurements on nanogram quantities of selected rare earth elements. The work was performed at the NRL trace element AMS…”
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AMS implications of charge-changing during acceleration by Knies, D.L., Grabowski, K.S., Cetina, C., Demoranville, L.T., Dougherty, M.R., Mignerey, A.C., Taylor, C.L.

“…The NRL Accelerator Mass Spectrometer facility was recently reconfigured to incorporate a modified Cameca IMS 6f Secondary Ion Mass Spectrometer as a…”
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Radiocarbon data collection, filtering and analysis at the NRL TEAMS facility by Tumey, S.J, Grabowski, K.S, Knies, D.L, Mignerey, A.C

“…This report describes a novel approach to collection and analysis of radiocarbon data due to the unique design of the Naval Research Laboratory Trace Element…”
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A microchannel plate system for accelerator mass spectrometry measurements by Cetina, C., Knies, D.L., Grabowski, K.S., Getaneh, M., Tumey, S.J., Raffanti, R., Siegmund, O.H.W., Vallerga, J.V.

“…The position-sensitive focal plane detector system for the trace element accelerator mass spectrometer at the US Naval Research Laboratory consists of 12…”
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Status report of the NRL TEAMS facility by Knies, D.L, Grabowski, K.S, Cetina, C, Hubler, G.K, Getaneh, M, Tumey, S.J

“…Measurements of radio and stable carbon isotope ratios are now routinely performed at the Naval Research Laboratory Trace Element Accelerator Mass Spectrometer…”
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The effects of radiation on MEMS accelerometers by Knudson, A.R., Buchner, S., McDonald, P., Stapor, W.J., Campbell, A.B., Grabowski, K.S., Knies, D.L., Lewis, S., Zhao, Y.

“…Exposing just the mechanical part (sensor) of MEMS accelerometers to protons and heavy ions caused large changes in outputs representing the measured…”
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Determination of 32Si by AMS at the US Naval Research Laboratory by Treacy, D.J, Knies, D.L, Grabowski, K.S, Hubler, G.K, DeTurck, T.M, Mignerey, A.C

“…Measurement of 32Si by accelerator mass spectrometry (AMS) at relatively low energy was undertaken at the Naval Research Laboratory. Measurement of this…”
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Sample distillation/graphitization system for carbon pool analysis by accelerator mass spectrometry (AMS) by Pohlman, J.W, Knies, D.L, Grabowski, K.S, DeTurck, T.M, Treacy, D.J, Coffin, R.B

“…A facility at the Naval Research Laboratory (NRL), Washington, DC, has been developed to extract, trap, cryogenically distill and graphitize carbon from a…”
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A report on the Naval Research Laboratory AMS facility by Grabowski, K.S, Knies, D.L, DeTurck, T.M, Treacy, D.J, Pohlman, J.W, Coffin, R.B, Hubler, G.K

“…A large portion of the novel trace element AMS (TEAMS) facility at the Naval Research Laboratory (NRL) is now installed. Vacuum and beam optics hardware is in…”
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Ion beam effects on the formation of Ge and Si nanoclusters in silica thin films by Carosella, C.A, Schiestel, S, Stroud, R.M, Grabowski, K.S, Kendziora, C, Stoiber, M

“…We have observed that ion-beam-assisted deposition (IBAD) has important effects on the optical properties of nanoclusters of Si or Ge in silica thin films. Si…”
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