C.T. Angell

article

Method for determining individual deposition velocities of radon progeny

C.T. Angell, M. Pedretti, E.B. Norman

Applied Radiation and Isotopes > 2015 > 98 > Complete > 34-39

The deposition velocity of radon progeny is used to model the removal of progeny from the air by surfaces in assessing indoor air quality. It can also be used to assess radon-induced background in sensitive, low-background experiments. A single value of the deposition velocity is typically used for all radon progeny for modeling purposes. This paper presents a method for uniquely determining the individual...

article

Demonstration of a transmission nuclear resonance fluorescence measurement for a realistic radioactive waste canister scenario

C.T. Angell, R. Hajima, T. Hayakawa, T. Shizuma, more

Nuclear Inst. and Methods in Physics Research, B > 2015 > 347 > Complete > 11-19

Transmission nuclear resonance fluorescence (NRF) is a promising method for precision non-destructive assay (NDA) of fissile isotopes—including ²³⁹ Pu—in spent fuel while inside a storage canister. The assay, however, could be confounded by the presence of overlapping resonances from competing isotopes in the canister. A measurement is needed to demonstrate that transmission NRF is unaffected...

article

Improvement to the semi-empirical germanium detector response model at the Compton edge

Christopher T. Angell, C.T. Angell

Nuclear Inst. and Methods in Physics Research, A > 2014 > 752 > Complete > 33-35

An accurate detector response model is needed for extracting the intensity profiles of distributions of γ rays incident on a detector. Current empirical detector-response models for HPGe detectors systematically vary from experimental spectra in the region of the Compton edge. In this work, we introduce new terms in the semi-empirical germanium detector response model that improves the agreement in...

article

Application of Laser Compton Scattered gamma-ray beams to nondestructive detection and assay of nuclear material

R. Hajima, T. Hayakawa, T. Shizuma, C.T. Angell, more

The European Physical Journal Special Topics > 2014 > 223 > 6 > 1229-1236

Generation of energy-tunable gamma-rays via Laser Compton Scattering is of great interest for scientific studies and applications of “MeV” photons which interact with nuclei. One of the promising applications of such energy-tunable gamma-rays is the nondestructive detection and assay of nuclides which are necessary for nuclear security and safeguards. We are developing technologies relevant to gamma-ray...

article

Measurement of excitation functions for the natMo(d,x)99Mo and natMo(p,x)99Mo reactions

P. Chodash, C.T. Angell, J. Benitez, E.B. Norman, more

Applied Radiation and Isotopes > 2011 > 69 > 10 > 1447-1452

The excitation functions for proton and deuteron induced reactions on natural molybdenum for the production of ⁹⁹ Mo were measured. The proton induced reaction was measured in the energy range of 11.3–49.6MeV, and the deuteron induced reaction was measured in the energy range of 9.7–58.5MeV. Both beams were generated by the 88" cyclotron located at Lawrence Berkeley National Laboratory...

article

Pulsed and monoenergetic beams for neutron cross-section measurements using activation and scattering techniques at Triangle Universities Nuclear Laboratory

A. Hutcheson, C.T. Angell, J.A. Becker, M. Boswell, more

Nuclear Inst. and Methods in Physics Research, B > 2007 > 261 > 1-2 > 369-372

In support of the Stewardship Science Academic Alliances initiative, an experimental program has been developed at Triangle Universities Nuclear Laboratory (TUNL) to measure (n,xn) cross-sections with both in-beam and activation techniques with the goal of improving the partial cross-section database for the NNSA Stockpile Stewardship Program. First experimental efforts include excitation function...

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Search results for: C.T. Angell

Method for determining individual deposition velocities of radon progeny

Demonstration of a transmission nuclear resonance fluorescence measurement for a realistic radioactive waste canister scenario

Improvement to the semi-empirical germanium detector response model at the Compton edge

Application of Laser Compton Scattered gamma-ray beams to nondestructive detection and assay of nuclear material

Measurement of excitation functions for the natMo(d,x)99Mo and natMo(p,x)99Mo reactions

Pulsed and monoenergetic beams for neutron cross-section measurements using activation and scattering techniques at Triangle Universities Nuclear Laboratory

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INFONA - science communication portal

Search results for: C.T. Angell

Method for determining individual deposition velocities of radon progeny

Demonstration of a transmission nuclear resonance fluorescence measurement for a realistic radioactive waste canister scenario

Improvement to the semi-empirical germanium detector response model at the Compton edge

Application of Laser Compton Scattered gamma-ray beams to nondestructive detection and assay of nuclear material

Measurement of excitation functions for the natMo(d,x)99Mo and natMo(p,x)99Mo reactions

Pulsed and monoenergetic beams for neutron cross-section measurements using activation and scattering techniques at Triangle Universities Nuclear Laboratory

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