title: Mach stem formation in outdoor measurements of acoustic shocks.
abstract: Mach stem formation during outdoor acoustic shock propagation is investigated using spherical oxyacetylene balloons exploded above pavement. The location of the transition point from regular to irregular reflection and the path of the triple point are experimentally resolved using microphone arrays and a high-speed camera. The transition point falls between recent analytical work for weak irregular reflections and an empirical relationship derived from large explosions.
authors.affiliation: Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA kevinmatthewleete@gmail.com, kentgee@byu.edu, tbn@byu.edu.
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Leete
authors.affiliation: Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA kevinmatthewleete@gmail.com, kentgee@byu.edu, tbn@byu.edu.
authors.forename: Kent L
authors.initials: KL
authors.lastname: Gee
authors.affiliation: Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA kevinmatthewleete@gmail.com, kentgee@byu.edu, tbn@byu.edu.
authors.forename: Tracianne B
authors.initials: TB
authors.lastname: Neilsen
authors.affiliation: Department of Mechanical and Aerospace Engineering, Utah State University, Logan, Utah 84322, USA taddtruscott@gmail.com.
authors.forename: Tadd T
authors.initials: TT
authors.lastname: Truscott