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Author: ryan fitzgerald

Displaying records 11 to 16.
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11. An Automated Ionization Chamber for Secondary Radioactivity Standards
Published: 12/8/2009
Author: Ryan P Fitzgerald
Abstract: We report on the operation and characterization of a new ionization chamber system, called AUTOIC, featuring a commerical digital electrometer and a commerical robotic sample changer. The ralative accuracy of the electrometer was improved significan ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903476

12. Half-life Measurements of Sr82
Published: 1/30/2009
Authors: Leticia S Pibida, Ryan P Fitzgerald, Michael P Unterweger, Michelle M. Hammond, Daniel B. Golas
Abstract: Half-life measurements of 82Sr were performed at the National Institute of Standards and Technology (NIST) using gamma-ray spectrometry and a 4 pressurized ionization chamber. The 82Sr half-life was determined to be 25.36 &plu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842553

13. Standardization of 68Ge/68Ga using three liquid scintillation counting-based methods
Series: Journal of Research (NIST JRES)
Published: 10/31/2008
Authors: Brian Edward Zimmerman, Jeffrey T Cessna, Ryan P Fitzgerald
Abstract: A solution containing 68Ge in equilibrium with its daughter, 68Ga, has been standardized for the first time at the National Institute of Standards and Technology using 3 liquid scintillation- based techniques: live-timed 4pb-g anticoincidence (LTAC) ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842499

14. A Liquid-Scintillation-based Primary Standardization of 210Pb
Published: 12/1/2007
Authors: L Laureano-p{eacute}rez, R Coll{eacute}, Ryan P Fitzgerald, Iisa Outola, Leticia S Pibida
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=100977

15. Development of a Compton Suppression Technique based on a Neural Network-
Published: 1/1/2005
Authors: Ryan P Fitzgerald, A E Champagne
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103125

16. Studies of (p,y) Reactions with the Daresbury Recoil Separator at ORNL'S HRIBF
Published: 1/1/2005
Authors: Ryan P Fitzgerald, E Abbotoy, D W Bardayan, J C Blackmon, A E Champagne, A A Chen, U Greife, D W Hill, A N James, R L Kozub, T A Lewis, R Livesay, Z Ma, S L Mahan, J W Mcconnell, W T Milner, B H Moazen, P D Parker, D E Pierce, M E Roettger, L Sahin, D Shapira, M S Smith, F Strieder, K B Swartz, J S Thomas, D W Visser
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=103124



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