Houghton University Digital Archives

The Houghton University Archives serves the students, faculty, staff, administration and alumni of Houghton University by collecting and maintaining a historical record of the University story. The Archives collects, organizes, preserves, and makes accessible materials critical to understanding the historic, present, and future mission of Houghton University and to nurturing identity, purpose, and unity in the University community. This DSpace site provides access to some of the Houghton University's digital collections.

 

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Recent Submissions

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An Experiment Simulating the Production, Capture, and Detection of 8Li from an ICF Implosion
(Houghton University, 2022-10-17) Brown, Adam E.; Martin, Andrew L.; Yuly, Mark; McLean, James G.; Padalino, Stephen J.; Forrest, Chad J.; Sangster, Thomas C.; Regan, Sean P.
Inertial confinement fusion (ICF) is a possible tool for measuring light-ion nuclear cross sections. One way to do this might be to trap and detect the radioactive decays of the product nuclei produced using a doped target capsule. Some of the highest yield light-ion reactions that could be studied using this technique are 6Li(t,p) 8Li and 9Be(t,α) 8Li, both of which produce 8Li . In order to simulate this method, a natural lithium film was deposited onto a tungsten substrate, which was then activated via the 7Li(d,p) 8Li reaction using the SUNY Geneseo Pelletron accelerator. A current pulse of up to 1000 A was discharged through the tungsten raising its temperature to as high as about 1500 °C in less than a few milliseconds, causing the lithium to rapidly evaporate and produce a gas of neutral lithium atoms which then travelled outward and stuck to the aluminum getter detector foil of the Short-Lived Isotope Counting System (SLICS). This phoswich detector was used to identify beta particles and count in situ the 840 ms beta decay curve for 8Li as a function of time in order to estimate the efficiency of SLICS for trapping and detecting ICF reaction products. Funded in part by a grant from the DOE through the Laboratory for Laser Energetics, and by SUNY Geneseo and Houghton University.
64th Annual Meeting of the APS Division of Plasma Physics, Spokane, WA, October 17-21, 2022.
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Depositing Lithium Films to Simulate ICF Reaction Products
(Houghton University, 2022-10-17) Lei, Chunsun; Hotchkiss, Andrew; Martin, Andrew; Brown, Adam; Yuly, Mark; Mclean, James G.; Padalino, Stephen J.; Forrest, Chad J.; Sangster, Thomas C.; Regan, Sean P.
A possible future experiment using Inertial Confinement Fusion (ICF) to measure low energy light ion nuclear cross sections has been simulated using the SUNY Geneseo Pelletron to activate a thin lithium target which was then rapidly evaporated, trapped, and detected. This experiment required a lithium film to be deposited in a vacuum of approximately 10 5 Torr onto the surface of a thin tungsten foil. The films were produced by heating natural lithium pellets to 400 C in a stainless steel boat through which 20 A of current was passed. The evaporated lithium was contained inside a stainless steel “house” inside the vacuum chamber, with a small opening on the top that allowed the lithium to reach the tungsten foil. The vacuum chamber was in an argon filled glove bag which allowed the films to be briefly removed and handled since lithium reacts vigorously with oxygen and water vapor. Funded in part by a grant from the DOE through the Laboratory for Laser Energetics, and by SUNY Geneseo and Houghton University.
64th Annual Meeting of the APS Division of Plasma Physics, Spokane, WA, October 17-21, 2022.
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Lantern, September 2022
(Houghton University, 2022-09-01) Lantern
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Deuterium-Deuterium Fusion Reactions in the Houghton College Cyclotron
(Houghton College, 2022-05-12) Bowman, Joshua
The Houghton College Cyclotron is a miniature particle accelerator that uses two “dee” shaped hollow electrodes, of 15.6 cm radius, to accelerate ions across a gap with an alternating RF potential difference of a few thousand volts at a frequency of 5.831 MHz. As an ion accelerates, an up to 1.13 T magnetic field keeps it on a circular path that spirals outward, allowing the ion to accelerate multiple times using the same electric potential. In this experiment, deuterons were ionized by electrons from a filament and accelerated, with a current of about 20 nA and an approximate energy of 4.8 keV, into a copper target at a radius of 5.54 cm where they embedded themselves. Later deuterons striking the embedded deuterons caused the D(d,n)3He reaction which produced neutrons. A plastic scintillator detector counted the neutrons that penetrated the chamber walls. An increase of 7913±587 counts or 158±12 counts per minute was detected when the beam was turned on. This is a significant milestone for the Houghton College Cyclotron as it is the first nuclear reaction that this cyclotron has successfully generated.
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Lantern, April 2022
(Houghton College, 2022-04-30) Lantern