Scholars@Duke
Alex Crowell

Alex Crowell

Research Scientist, Senior
Physics
Box 90308, Durham, NC 27708-0308
116 Science Drive, 416 TUNL, Durham, NC 27708

Scholarly Works - Conferences

Design of an Experiment to Measure ann Using 3 H (γ, pn) n at HIγS

Conference EPJ Web of Conferences · March 25, 2016 We provide an update on the development of an experiment at TUNL for determining the 1S0 neutron-neutron (nn) scattering length (ann) from differential cross-section measurements of three-body photodisintegration of the tri ... Full text Cite

Monte-Carlo Simulation of 3H(γ, pn) n and 3He(γ, pp) n Experiments at HI γs

Conference EPJ Web of Conferences · March 25, 2016 We are developing an experiment to measure the two and three-body (γ, p) differential cross sections (DCS) for 3H and 3He. These data will be used to determine the 1S0 nn scattering length (ann) and np ... Full text Cite

Neutron-neutron quasifree scattering in nd breakup at 10 MeV

Conference EPJ Web of Conferences · March 25, 2016 The neutron-deuteron (nd) breakup reaction provides a rich environment for testing theoretical models of the neutron-neutron (nn) interaction. Current theoretical predictions based on rigorous ab-initio calculations agree well with most experimental data f ... Full text Cite

Neutron-deuteron analyzing power data at En=22.5 MeV

Conference Physical Review C Nuclear Physics · May 12, 2014 We present measurements of n-d analyzing power, Ay(θ), at En=22.5 MeV. The experiment uses a shielded neutron source which produced polarized neutrons via the 2H(d - ,n - )3He reaction. It also uses a deuterated liquid-scintillator center detector and six ... Full text Cite

SU‐FF‐T‐436: Comparison of Neutron Doses to a Water Target Exposed to a 10 MeV Neutron Beam: Foil Activation Method Vs. Monte Carlo Simulations

Conference Medical Physics · January 1, 2009 We developed a mouse dosimetry model for neutron beam, and compared the calculated and simulated neutron doses for a water target (mouse) exposed to a 10 MeV neutron beam. We also estimated the longitudinal neutron dose profile for the water target. A wate ... Full text Cite

SU‐FF‐T‐372: Novel Neutron Dosimetry Using Radiochromic Films for 10 MeV Neutrons

Conference Medical Physics · January 1, 2009 The purpose of this paper is to estimate neutron doses using radiochromic XRQA films. Five radiochromic films, placed at varying distances from the neutron source and a water bottle, were exposed to a flux of 10 MeV neutrons produced via the d(d, n)He reac ... Full text Cite

Development of a High-Energy Gamma Camera for use with NSECT Imaging of the Breast

Conference 2006 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOL 1-6 · January 1, 2006 Link to item Cite

Neutron Spectroscopy of Mouse Using Neutron Stimulated Emission Computed Tomography (NSECT)

Conference 2006 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOL 1-6 · January 1, 2006 Link to item Cite

Neutron Stimulated Emission Computed Tomography (NSECT) for Early Detection of Breast Cancer

Conference 2006 IEEE Nuclear Science Symposium Conference Record · 2006 Full text Cite

Accelerator-driven waste transmutation experiment.

Conference HEALTH PHYSICS · June 1, 2003 Link to item Cite