Zobrazeno 1 - 10
of 29
pro vyhledávání: '"H. Heather Chen-Mayer"'
Publikováno v:
IEEE Transactions on Nuclear Science. 68:1505-1510
A linear fast neutron beam chopper has been deployed at a prompt gamma activation analysis instrument, enabling in-beam activation analysis of short-lived ( $T_{\mathrm {1/2}} > \sim 10$ ms) neutron capture products without the need for sample transf
Determination of aluminum in bovine liver SRM 1577c by Instrumental Cold Neutron Activation Analysis
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 326:1879-1885
Instrumental neutron activation analysis may need to correct for matrix interferences caused by fast neutron induced threshold reactions. The very low Al mass fraction in bovine liver Standard Reference Material (SRM) has eluded certification due to
Autor:
H. Heather Chen-Mayer, Ronald E. Tosh, Fred B. Bateman, Paul M. Bergstrom, Brian E. Zimmerman
Publikováno v:
Journal of Research of the National Institute of Standards and Technology. 126
A portable calorimeter for direct realization of absorbed dose in medical computed tomography (CT) procedures was constructed and tested in a positron emission tomography (PET) CT scanner. The calorimeter consists of two small thermistors embedded in
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 322:1729-1738
We are developing a one-sided tomographic method for imaging prompt gamma rays, without moving the source, sample, or detector, in a standard prompt gamma activation analysis setting. Dual-plane pixelated CdZnTe detectors developed from a commercial
Autor:
Richard A. Livingston, Jacob M. LaManna, H. Heather Chen-Mayer, Danyal J. Turkoglu, Ariel O'Connor
Publikováno v:
Journal of Archaeological Science: Reports. 21:99-106
In ancient China during the Shang dynasty, ca. 1600 BCE–1046 BCE, intricate jade and bronze dagger-axes (ge) were made and used by the elite as ritual symbols of power and prestige. These meticulously crafted ceremonial weapons consist of a nephrit
Autor:
Vera N. Smolyaninova, Jeffrey W. Lynn, Nicholas P. Butch, Igor I. Smolyaninov, H. Heather Chen-Mayer, Joseph Prestigiacomo, M. S. Osofsky
Publikováno v:
Metamaterials XII.
This presentation was first delivered at Photonics West 2020 on 4 February 2020 and has been included as part of this Digital Forum to enable scholarly dialogue. Please use the original citation when citing: Proceedings Volume 11284, Smart Photonic a
Publikováno v:
Neutron News. 32:44-44
Autor:
Igor I. Smolyaninov, Vera N. Smolyaninova, Jeffrey W. Lynn, H. Heather Chen-Mayer, Joseph Prestigiacomo, Michael Osofsky, Nicholas P. Butch
Metamaterial approach is capable of drastically increasing the critical temperature, Tc, of composite metal-dielectric superconductors. Tripling of Tc was observed in bulk Al-Al2O3 core-shell metamaterials. A theoretical model based on the Maxwell-Ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f6ed2fdcc9c6633e17e759a5916e21c
Publikováno v:
The Analyst. 142(20)
The accuracy of low-level hydrogen measurements with prompt gamma-ray activation analysis (PGAA) depends on identifying and accounting for all background H signals, including interfering signals. At the cold-neutron (CN)PGAA facility at the NIST Cent