Justin Browne

Experience

2022–Present

Algorithm Developer, SolidCAM

• Researched and developed toolpath generation algorithms for CAM software.
• Experimented and collected data to guide algorithm development.
• Developed algorithms needed for direct toolpath editing by the user.

2011–2021

Graduate Research Assistant, National Superconducting Cyclotron Laboratory

• Set up and conducted a radioactive beam experiment to measure the ³⁴Ar(α,p)³⁷K cross section, using JENSA gas jet target and SuperORRUBA silicon detector array. The experiment is relevant for the understanding of X-ray bursts, and analyzed the data.
• Designed and build a detector holding and positioning system.
• Assembled the JENSA gas jet target and commissioned it using the ⁴He(p,p)⁴He and ¹⁴N(α,p)¹⁷O reactions.
• Set up ASICs data acquisition for JENSA and ANASEN experiments in NSCL's ReA3 hall.

2010

Undergraduate Research Assistant, National Superconducting Cyclotron Laboratory

• Developed a micro-channel plate detector based beam intensity detector.
• Worked on the development of the Active Target Time Projection Chamber.

2007–2011

Undergraduate Research Assistant, University of Notre Dame

• Worked on stable beam experiments to study the ¹²C(¹²C,n)²³Mg reaction, using the FN Tandem Van de Graaff accelerator.

Education

2021

Michigan State University, Department of Physics and Astronomy, East Lansing, MI
Ph.D. in Physics (3.3513)
Advisor: Hendrik Schatz
Thesis: https://d.lib.msu.edu/etd/49592

2013

Michigan State University, Department of Physics and Astronomy, East Lansing, MI
M.S. in Physics
Advisor: Hendrik Schatz

2011

University of Notre Dame, Department of Physics, Notre Dame, IN
B.S. in Physics (3.499)
Advisor: Xiaodong Tang

Skills

• Programming Languages:
  • C++
  • C
  • Rust
  • Python
  • Javascript
• CAD/CAM:
  • SolidCAM
  • Solidworks
  • Autodesk Inventor
  • FreeCAD
• Experimental Devices:
  • Gas jet targets
  • Silicon detector arrays
  • Ionization chambers
• Simulation:
  • Computational fluid dynamics
  • Astrophysical models
• Data Acquisition:
  • NSCLDAQ
  • HINP16C ASICs
  • DDAS
  • NSCLDAQ
  • HRIBF DAQ

Publications

• J. Browne et al. "First Direct Measurement Constraining the ³⁴Ar(α,p)³⁷K Reaction Cross Section for Mixed Hydrogen and Helium Burning in Accreting Neutron Stars" (2023) Phys. Rev. Lett. 130, 212701
• S. Hallam et al. "Exploiting Isospin Symmetry to Study the Role of Isomers in Stellar Environments" (2021) Phys. Rev. Lett. 126, 042701
• W.-J. Ong et al. "β Decay of ⁶¹V and its Role in Cooling Accreted Neutron Star Crusts" (2020) Phys. Rev. Lett. 125, 262701
• Z. Meisel et al. "Nuclear mass measurements map the structure of atomic nuclei and accreting neutron stars" (2020) Phys. Rev. C 101, 052801(R)
• C. Wolf et al. "Constraining the Neutron Star Compactness: Extraction of the ²³Al(p,γ) Reaction Rate for the rp Process" (2019) Phys. Rev. Lett. 122, 232701
• K. Schmidt et al. "Status of the JENSA gas-jet target for experiments with rare isotope beams" (2018) Nucl. Instrum. Meth. A 911, 1
• A. Kankainen et al. "Measurement of key resonance states for the ³⁰P(p,γ)³¹S reaction rate, and the production of intermediate-mass elements in nova explosions" (2017) Phys. Lett. B 769, 549
• W.-J. Ong et al. "Low-lying level structure of ⁵⁶Cu and its implications for the rp process" (2017) Phys. Rev. C 95, 055806
• D. W. Bardayan et al. "The new JENSA gas-jet target for astrophysical radioactive beam experiments" (2016) Nucl. Instrum. Meth. B 376, 326
• Z. Meisel et al. "Time-of-flight mass measurements of neutron-rich chromium isotopes up to N=40 and implications for the accreted neutron star crust" (2016) Phys. Rev. C 93, 035805
• A. Kankainen et al. "Angle-integrated measurements of the ²⁶Al(d,n)²⁷Si reaction cross section: a probe of spectroscopic factors and astrophysical resonance strengths" (2016) Eur. Phys. J. A 52, 6
• Z. Meisel et al. "Mass Measurement of ⁵⁶Sc Reveals a Small A=56 Odd-Even Mass Staggering, Implying a Cooler Accreted Neutron Star Crust" (2015) Phys. Rev. Lett. 115, 162501
• B. Bucher et al. "First Direct Measurement of ¹²C(¹²C,n)²³Mg at Stellar Energies" (2015) Phys. Rev. Lett. 114, 251102
• Z. Meisel et al. "Mass Measurements Demonstrate a Strong N=28 Shell Gap in Argon" (2015) Phys. Rev. Lett. 114, 022501
• C. Langer et al. "Determining the rp-Process Flow through ⁵⁶Ni: Resonances in ⁵⁷Cu(p,γ)⁵⁸Zn Identified with GRETINA" (2014) Phys. Rev. Lett. 113, 032502
• D. Suzuki et al. "Resonant α scattering of ⁶He: Limits of clustering in ¹⁰Be" (2013) Phys. Rev. C 87, 054301
• D. Suzuki et al. "Prototype AT-TPC: Toward a new generation active target time projection chamber for radioactive beam experiments" (2012) Nucl. Instrum. Meth. A 691, 39
• D. Suzuki et al. "Test of a micromegas detector with helium-based gas mixtures for active target time projection chambers utilizing radioactive isotope beams" (2011) Nucl. Instrum. Meth. A 660, 64