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The original Radiation Lab was equipped with a 150-kV Cockroft-Walton accelerator manufactured by the Texas Nuclear Corporation. This laboratory was housed in the old Dailey garage on Richland Avenue near where the new 682 bypass is now located. This photo is taken from the proposal submitted to the U.S. Atomic Energy Commission to fund the tandem accelerator. |
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A flyer for the ground-breaking ceremony for Clippinger and the Ohio University Accelerator Laboratory that was held on July 19, 1965. This photo is from the Ohio University archives. |
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February 1966: the laboratory was just a hole in the ground at this point. Clippinger is under construction in the background. This photo is from the Ohio University archives. |
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Construction of the Ohio University Accelerator Laboratory on June 1, 1966. Note the extra-thick concrete walls used to provide radiation shielding for the target rooms and accelerator vault. This photo is taken from the proposal submitted to the U.S. Atomic Energy Commission to fund the tandem accelerator. |
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Construction of the Ohio University Accelerator Laboratory on October 11, 1966. |
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The Ohio University Accelerator Laboratory on May 1, 1967. The construction is nearly complete. This photo is taken from a proposal submitted to the National Science Foundation seeking to enhance the Department of Physics. |
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The accelerator tank, arriving on campus. |
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Maneuvering the tank into position. |
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Roger Finlay, observing the process. This must have been a very exciting time for him. |
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Lowering the bottom of the tank -- the base of the "T" -- into position. |
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It was necessary to break away some of the brand new concrete in order to fit the tank into the building. |
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The ion source area in the low-energy part of the vault, in the early days. This photo is taken from a proposal submitted to the U.S. Atomic Energy Commission in 1973 to fund research in the laboratory. |
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The high-energy part of the vault in the early days. This photo is taken from a proposal submitted to the U.S. Atomic Energy Commission in 1973 to fund research in the laboratory. |
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The small target room in the early days. This photo is taken from a proposal submitted to the U.S. Atomic Energy Commission in 1973 to fund research in the laboratory. |
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The large target room in the early days. This photo is taken from a proposal submitted to the U.S. Atomic Energy Commission in 1973 to fund research in the laboratory. |
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The control room in the early days. |
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Roger Finlay, Jacobo Rapaport, and Steve Grimes, sitting on top of the newly-installed magnetic quadrupole triplet spectrometer in the large target room in the spring of 1979. Senior Honors Tutorial College student Jerry Weber is standing the foreground, asking the faculty for recommendation letters to graduate school. |
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A flier commemorating the completion of the neutron time-of-flight tunnel. |
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Looking down the new neutron time-of-flight tunnel. |
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The newly-installed beam swinger magnet. |
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The beam swinger magnet was designed by Aaron Galonsky at Michigan State University for use at their accelerator. After several years of operation, it could no longer be used at their facility due to an increase in their beam energy. It thus became available for our use at the Ohio University Accelerator Lab. This photo of the plaque on the magnet was taken in 2005, by which time the swinger had inadvertantly "swung" into something and chipped the plaque. |
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Two computer systems built in the laboratory by Don Carter and his undergraduate assistants Dennis Hunt and Pat Welch. The smaller one, sitting on top, is known as OU-8000, and was used for data acquisition beginning in the mid 1970s. It is described this Nuclear Instruments and Methods article. The larger computer on the bottom is known as OU-32 and came on line a few years later. It was used for data analysis and is described here. The front panels for both computers were made in the department machine shop by Roger Smith (before the advent of CNC mills!). Both computers were workhorses and served in the laboratory through the mid 1990s. |
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Roger Finlay and Jacobo Rapaport with the swinger in the early 1980s. This photo is from the Ohio University archives. |
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Ground breaking for the expansion of the John E. Edwards Accelerator Laboratory in 1993. People visible from left to right include Louis Wright, Lloyd Chestnut, David Ingram, Jacobo Rapaport, David Onley, Roger Finlay (with shovel), Jim Dilley, Charlotte Elster, and Chuck Brient. |
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Expansion underway, 1993. Construction was completed in early 1994. |
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The view inside the accelerator tank, looking up along the vertical coumn. The "T" structure of the columns is clearly evident. This photo appeared in Spring 2004 issue of Ohio Today. |
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Carl Brune and Catalin Matei at the high-energy end of the machine. This photo appeared in Spring 2004 issue of Ohio Today. |
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Sadly, Roger Finlay passed away on March 13, 2011. The conference room in the Edwards Accelerator Lab was subsequently named the Roger W. Finlay Conference Room in his honor. This large photo from the ground breaking ceremony for the expansion of the Edwards Accelerator Lab now hangs in the conference room. |
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Steve Grimes, Ernst Breitenberger, Louis Wright, Harold Knox, Chuck Brient, and Ray Lane, immediately following Harold′s colloquium presented to the Department of Physics and Astronomy on April 22, 2011. Harold received his Ph.D. from Ohio University in 1972 under the supervision of Roger Finlay. After his Ph.D., Harold worked at Rensselaer Polytechnic Institute and Texas A&M before returning to Ohio University as a postdoctoral Fellow. Since 1989 he worked for the Knolls Atomic Power Laboratory. Harold passed away a little over a year later, on July 15, 2012. |
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The accelerator control room on October 20, 2011. The terminal voltage is being regulated by the new Terminal Potential Stabilizer provided by the National Electrostatics Corporation. The unit is sitting on the cart in the foreground. This was the first part of the Pelletron upgrade project. The machine was still utilizing the old belt charging system at this time. |
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The new Terminal Potential Stabilizer and Charging Controller, installed in the control panel on December 15, 2011. |
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The chain drive motors and pulleys, awaiting installation, on December 15, 2011. |
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Some of the installed chains and pulleys on January 17, 2012. Our system utilizes three chains, running vertically. The Pelletron charging system was sucessfully tested at 1 MV terminal voltage on January 24, 2012, and at 4 MV a few days later. Photo by Devon Jacobs. |
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Accelerator Engineer Devon Jacobs with the Alphatross in October 2019, following installation. The first plasma was achieved the following week. Photo by Don Carter. |
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First plasma achieved with the Alphatross. November 2019. Photo by Don Carter. |
Experimental nuclear science Ph.D. graduates from Ohio University. This list includes students who utilized the tandem accelerator for materials science purposes, as well as three students who conducted theoretical research that are included for completeness (two advised by Grimes and one by Finlay). It should also be noted that there were several experimental high-energy physics Ph.D.s in the department in the pre-1975 era who are not included. As of July 2012, the list includes 76 Ph.D.s, of which 58 involved experimetal work performed at at Ohio University.
Name | Year | Advisor | Thesis |
Gula Hamad | 2022 | Meisel | Measurements of the 96Zr(α,n) and 65Cu(α,n) Cross Sections at Edwards Accelerator Laboratory for Astrophysics and Applications |
Joseph A. Rowley | 2022 | Hicks | Improved Λp Elastic Scattering Cross Sections Between 0.9 and 2.0 GeV/c and Connections to the Neutron Stars |
Shiv Subedi | 2021 | Meisel | Investigating and Reducing the Impact of Reaction Rate Uncertainties on 44Ti and 56Ni Production in Shock Driven Nucleosynthesis of Core Collapse Supernovae |
Ustav Shrestha | 2021 | Hicks | Photoproduction of Λ* Resonances using the CLAS Detector |
Doug Soltesz | 2021 | Meisel | Use of (3He,n) Reactions to Constrain Nuclear Reaction Rates in the Hydrogen and Helium Burning Environments of Type-I X-ray Bursts |
Som Paneru | 2020 | Brune | Elastic Scattering of 3He+4He with SONIK |
Bishnu Karki | 2020 | Roche | Deep Exclusive π0 Electroproduction Measured in Hall A at Jefferson Lab with the Upgraded CEB |
Taya Chetry | 2019 | Hicks | A Study of the Reaction γd→ π+π -d (From Vector Mesons to Possible Dibaryons) |
Rekam Giri | 2019 | Brune | Cross Section Measurements of the 12C(α ,γ)16O Reaction at Ec.m.=3.7, 4.0, and 4.2 MeV |
Abinash Pun | 2019 | Frantz | Measurements of Di-Jet π0-h± Correlations in Light-Heavy Ion Collisions at RHIC-PHENIX |
Tyler Danley | 2018 | Frantz | Photon-Related Elliptic Azimuthal Asymmetry and Photon-Hadron Correlations with an Isolation Cut in Au+Au Collisions at √sNN = 200 GeV at RHIC-PHENIX |
Mongi Dlamini | 2018 | Roche | Measurement of Hard Exclusive Electroproduction of π0 Meson Cross Section in Hall A of JLab with CEBAF at 12 GeV |
Nadyah Alanazi | 2018 | Voinov | Studying the Fusion Evaporation Reaction (α,n) with 54Fe, 56Fe, 57Fe, and 58Fe |
Andrea Richard | 2018 | Crawford | Spectroscopy of the A = 33 Isobars in the Island of Inversion |
Nicholas Compton | 2017 | Hicks | The Differential Cross Section and Λ Recoil Polarization from γd → K0Λ(p) |
Sushil Dhakal | 2016 | Brune | Study of DD Neutrons and their Transmission in Iron |
Cody E. Parker | 2016 | Brune | The
3H(d,γ) Reaction and the
3H(d,γ)/3H(d,n)
Branching Ratio for |
Shamim Akhtar | 2016 | Brune | Study of the 12C(α,γ)16O Reaction via the α-Transfer Reactions: 12C(6Li,d)16O and 12C(7Li,t)16O |
Shloka K. Chandavar | 2015 | Hicks | Photoproduction of scalar mesons using the CEBAF Large Acceptance Spectrometer (CLAS) |
Bing Xia | 2014 | Frantz | Neutral Pion - Charged Hadron Jet Correlations in d+Au Collisions at 200 GeV |
Anthony Paul Ramirez | 2014 | Voinov | Study of nuclear level density from deuteron induced reactions on iron and copper isotopes |
Nowo Riveli | 2014 | Frantz | Direct Photon - Hadron Correlations Measurement in Au+Au Collision at Nucleon Center-Of-Mass Energy of 200 GeV With Isolation Cut Methods |
Dilupama A. Divaratne | 2014 | Brune | One and Two Neutron Removal Cross Sections of 24O via Projectile Fragmentation |
Youngshin Byun | 2013 | Grimes / Voinov | Study of nuclear level density and gamma-strength function in 90Zr, 196Pt, and 197Pt |
Kevin W. Cooper | 2013 | Ingram | Characterization of diamond like carbon thin films fabricated by unbalanced magnetron sputtering under ultra-high vacuum conditions |
Buddhini Waidyawansa | 2013 | Roche | A 3% Measurement of the Beam Normal Single Spin Asymmetry in Forward Angle Elastic Electron-Proton Scattering using the Qweak Setup |
Rakitha Beminiwattha | 2013 | Roche | A Measurement of the Weak Charge of the Proton through Parity Violating Electron Scattering using the Qweak Apparatus: A 21% Result |
Wei Tang | 2012 | Hicks | Photoproduction of K*+Λ/Σ0 and K0Σ+ from the proton Using CLAS at Jefferson Lab |
Daniel Sayre | 2011 | Brune | Measurement of the 2.68-MeV resonance interference and R-matrix analysis of the 12C(α,γ)16O reaction |
Dustin Keller | 2010 | Hicks | U-spin symmetry test of the Σ*+ electromagnetic decay |
Babatunde Oginni | 2009 | Grimes | Study of nuclear level densities from evaporation of compound nuclei of mass numbers 61, 64, 65, and 82 |
Aderemi Adekola | 2009 | Brune | Proton-transfer study of unbound 19Ne via the 2H(18F,α)15O reaction |
Shaleen Shukla | 2008 | Grimes | Calculation of nuclear level densities near the drip lines |
Serdar Kizilgul | 2008 | Hicks | Study of pion photo-production using a TPC detector to determine beam asymmetries from polarized HD |
Catalin Matei | 2006 | Brune | Nucleosynthesis of 16O under quiescent helium burning |
Ishaq Hleiqawi | 2006 | Hicks | K*0 photoproduction and electroproduction measured at CLAS |
Christopher Bade | 2006 | Hicks | RF methods to increase deuteron polarization in HD targets and NMR spin-polarization analysis at LEGS |
Yannis Parpottas | 2004 | Grimes | Astrophysically important states in 18Ne and 26Si studied with the (3He,n) reaction |
Glen MacLachlan | 2004 | Opper | The ratio of electric and magnetic proton form factors at Q2=1.13 (GeV/c)2 via recoil polarimetry |
Americo Salas Bacci | 2003 | Grimes | Level densities of 28Si, 46Ti, 52Cr and 60Ni from Ericson fluctuations |
Asghar Kayani | 2003 | Ingram | Deposition and characterization of diamond-like carbon films with and without hydrogen and nitrogen |
Eugen Trifan | 2003 | Ingram | Study of the early stages of growth and epitaxy of GaN thin films on sapphire |
Raymond Wheeler | 2002 | Grimes | Nuclear spectroscopy using charged particles |
James Oldendick | 2002 | Grimes | Low energy reaction modes of 6Li and 10B on 27Al |
Yixiu Kang | 2002 | Ingram | Deposition and Characterization of Amorphous GaN Thin Films |
Xiaochun Wang | 2001 | Rapaport | The 13C(p⃗,n⃗)13N reaction: spin observable measurements at 200 MeV |
Diane Reitzner | 2001 | Opper | Charge symmetry breaking in np→dπ0 close to threshold |
Po-Lin Huang | 1998 | Grimes | The study of the role of the two-body force in determining level densities |
Cheri Hautala | 1998 | Rapaport | Measurement of polarization observables in the quasielastic region on natCa and natPb using the (p⃗,n⃗) reaction at 200 MeV |
Saleh-Ibra Al-Quraishi | 1997 | Grimes | Analysis of reaction modes of low energy reactions of deuterons with 56Fe and 27Al nuclei |
Michael Maldei | 1997 | Ingram / Gulino |
A study of the suitability of amorphous, hydrogenated carbon (a-C:H) for photovoltaic devices |
Soon-Cheon Seo | 1996 | Ingram | The characterization of diamond-like carbon films deposited using unbalanced magnetron sputtering |
Joel Keay | 1996 | Ingram | Hydrogen analysis of diamond-like carbon using MeV ion beams |
Rodney Michael | 1995 | Hicks | K+-nucleus elastic scattering at 715 and 635 MeV/c |
Hong Zhang | 1995 | Hicks | Proton compton scattering and π-production with polarized photons |
Chi Tang | 1995 | Ingram | A design of experiment study of the nucleation of chemical vapor deposited diamond films |
Werner Abfalterer | 1995 | Finlay | Level widths and level densities of nuclei in the 32≤A≤60 mass region inferred from fluctuation analysis of total neutron cross sections |
Fred Bateman | 1994 | Grimes | A study of the 29Si level density from 3 to 22 MeV |
James Guillemette | 1994 | Grimes | A study of the higher excitation levels in 14C via the 10Be(α,n0)13C reaction in the 2.5 MeV ≤ Eα ≤8.5 MeV energy range |
Xun Yang | 1994 | Rapaport | Dipole and spin dipole resonances observed in charge exchange reaction on p-shell nuclei at intermediate energies |
Lian Wang | 1993 | Rapaport | the 10B(p,n)10C reaction and quasifree scattering on p-shell nuclei at 186 MeV |
Henry Clark | 1993 | Hicks | Nuclear decay following deep-inelastic scattering at 500 GeV |
Earl Saito | 1993 | Lane | Level study of 14C via neutron scattering to the unbound levels of 13C |
Vivek Mishra | 1992 | Grimes | Level density of 57Co in the energy region 1 MeV to 14 MeV |
Brent Park | 1991 | Rapaport | Energy dependence of Gamow-Teller and dipole strength distribution in A = 32 and A = 40 nuclei via (n,p) reactions |
Nourredine Boukharouba | 1991 | Grimes | Low-energy optical model studies on 54Fe and 56Fe |
Yun Wang | 1988 | Rapaport | Nuclear structure studies with monoenergetic neutrons: zirconium isotopes |
Rupak Das | 1988 | Finlay | Unified description of the n+209Bi mean field between 20 MeV to 60 MeV via the dispersion relation |
Edward Sadowski | 1988 | Lane | A study of the higher excitation levels of 11B via the 10B(n,n)10B and 10B(n,n′)10B*(0.72, 1.74, 2.15, 3.59, 4.77 MeV) reactions |
Sharad Saraf | 1988 | Grimes | Multi-step compound nuclear reactions induced by 8.0 to 14.8 MeV neutrons on 54Fe and 56Fe with comparison to equilibrium and pre-equilibrium models |
Paul Egun | 1987 | Brient | The study of proton transfer reactions and their application to nuclear level counting via the reactions 23Na,28Si,32S(d,n) |
Dau Wang | 1987 | Rapaport | Nucleon induced reactions on p-shell nuclei |
David Resler | 1987 | Lane | Structure of 14C via elastic and inelastic neutron scattering from 13C: measurement, R-matrix analysis, and shell model calculations |
Hirannaiah Satyanarayana | 1986 | Grimes | Level densities of 26Al, 27Al, and 28Si studied with the (d,n) reaction |
Md. Saiful Islam | 1985 | Finlay | Elastic and inelastic scattering of nucleons from 16O |
Ricardo Alarcon | 1985 | Rapaport | Elastic and inelastic scattering of low energy nucleons from 28Si, 32S, 34S and 40Ca |
Steven Graham | 1985 | Grimes | Neutron-induced charged particle reactions on 58Ni and 60Ni with comparision to statistical model calculations |
Ali Soleimani Meigooni | 1984 | Finlay | Nucleon-induced excitation of collective bands in 12C and the application to neutron dosimetry at En>20 MeV |
Paul Koehler | 1984 | Lane | Structure of 19O from measurement and R-matrix analysis of σ(θ) for 18O(n,n′)18O*(1.98 MeV) |
Steve Mellema | 1983 | Finlay | Microscopic and collective model analysis of nucleon scattering from 54,56Fe |
Rajendra Kurup | 1983 | Finlay | The isospin and strong coupling effects near shell closing |
Ramesh Tailor | 1983 | Rapaport | Neutron scattering from s-d shell nuclei |
Vivek Kulkarni | 1981 | Rapaport | Study of neutron-deuteron reactions using a magnetic quadrupole triplet spectrometer |
Mohammed Mirzaa | 1978 | Rapaport | Neutron scattering on even isotopes of tin |
Mohammad Hadi Hadizadeh-Yazdi | 1978 | Finlay | Isospin dependence of nuclear deformations |
Roger White | 1977 | Lane | A study of the higher excitation states of 12B via the 11B(n,n)11B reaction |
David Bainum | 1977 | Finlay | Neutron inelastic scattering from closed-shell nuclei |
Kumaroth Devan | 1976 | Brient | Low-lying states of 104Ag and 106Ag |
Tarlok Cheema | 1976 | Rapaport | Energy dependence of the nucleon-nucleus optical potential via neutron scattering |
Juan Ferrer | 1975 | Rapaport | Neutron elastic scattering at 11 MeV and the isospin dependence of the nucleon-nucleus optical potential |
Gabriel Doukellis | 1975 | Rapaport | Multilevel multichannel study of the structure of 27Al at excitation energies between 13.0 and 15.0 MeV |
Charles Nelson | 1973 | Lane | A study of the structure of 12B via elastic scattering of neutrons from 11B |
Siegfried Hausladen | 1973 | Lane | A study of the structure of 11B from elastic scattering of neutrons from 10B |
John Lemming | 1972 | Finlay | Polarization and angular distribution of neutrons emitted from the 18O(p,n)18F reaction at proton energies between 3.00 and 3.50 MeV |
Harold Knox | 1972 | Finlay | Differential cross section and polarization of 2.63 MeV neutrons scattered from 12C |
John Cox | 1972 | Lane | Differential cross section and polarization for neutrons scattered from 10B at 2.63 MeV |
Gene Stoppenhagen | 1968 | Finlay | Polarization of the neutrons produced in the D(d,n)3He reaction at low deuteron bombarding energies |
Michael Gilpatrick | 1967 | Finlay | Angular correlation of inelastically scattered neutrons and the associated gamma rays from carbon 12 at En=14.65 MeV |
Paul Beach | 1966 | Finlay | Elastic scattering of 14.1 MeV neutrons from nitrogen, oxygen, and argon |
Albert Frasca | 1965 | Finlay | Elastic scattering of 14 MeV neutrons from carbon, boron, potassium, and calcium |
Tran Trong Gien | 1965 | Finlay | Relativistic formulation of the lifetime matrix in collision theory |
Douglas Humphrey | 1965 | Finlay | The angular distribution of neutrons inelastically scattered from the 0.48 MeV level of 7Li |
William Gettys | 1964 | Finlay | Inelastic nucleon scattering and the shell model |
Richard Castle | 1963 | Finlay | Measurement of the circular polarization of the 1.28 MeV gamma ray following the beta decay of Europium 154 |
We are also aware of several additional Ph.D. theses from other institutions that were based in part upon research carried out at the Edwards Accelerator Laboratory:
Edwards Accelerator Laboratory, Athens, OH 45701 |