Publications in VIVO

Co-author Network

Changala, Peter Bryan

Asst Professor Adjoint

Positions

Asst Professor Adjoint, Physics

Publications

selected publications

conference proceeding
- Spectral analyses of trans- and cis-DOCO transients via comb spectroscopy. Molecular Physics. 3710-3717. 2017
- Cavity-Enhanced Mid-IR Optical Frequency Comb Spectroscopy: Enhanced Time and Spectral Resolution 2015
journal article
- Robust Performance of the Noniterative Triples Corrections in CCSD(T)Λ: YbS as a Challenging Case with Strong Variation of Orbital Rotation.. Journal of Physical Chemistry A. 4029-4037. 2026
- Experimental Proof of Strong Π-Σ Mixing in the Renner-Teller and Pseudo-Jahn-Teller Affected CCH+ (3Π) Ion.. Journal of Physical Chemistry Letters. 4732-4740. 2026
- Cyclopropanone: Preparation, Rotational Spectroscopy, and Semi-Experimental Equilibrium (reSE) Structure.. Journal of the American Chemical Society. 14072-14085. 2026
- Microwave Detection of a Metal Peroxide and Two New Metal Dicarbides: The Precise Semiexperimental Equilibrium Structures of CaO2, SrC2, and YbC2.. Journal of Physical Chemistry A. 161-170. 2026
- Laboratory Rotational Spectroscopy of CaC3N and CaC4H.. Journal of Physical Chemistry A. 11531-11537. 2025
- The Molecular Inventory of TMC-1 with GOTHAM Observations. Astrophysical Journal Supplement Series. 2025
- Mode-specific low barrier tunneling dynamics in the A state of formaldehyde: The ν₁ fundamental and ν₄ + ν₅ combination levels. Journal of Chemical Physics. 2025
- Insights into Hypermetallic Molecules En Route to Multiple Optical Cycling Centers: Thermodynamic and Spectroscopic Trends in Mg and Ca Bearing Acetylides. Journal of Physical Chemistry A. 6385-6390. 2025
- Discovery of the Seven-ring Polycyclic Aromatic Hydrocarbon Cyanocoronene (C₂₄H₁₁CN) in GOTHAM Observations of TMC-1. Astrophysical Journal Letters. 2025
- The Missing Link of Sulfur Chemistry in TMC-1: The Detection of c-C₃H₂S from the GOTHAM Survey. The Astrophysical Journal (ApJ). 2025
- Detections of interstellar aromatic nitriles 2-cyanopyrene and 4-cyanopyrene in TMC-1. Nature Astronomy. 262-270. 2025
- Detection of interstellar 1-cyanopyrene: A four-ring polycyclic aromatic hydrocarbon. Science. 810-813. 2024
- Constraining P and T violating forces with chiral molecules. Physical Review Research. 2024
- Constraining CP Violating Nucleon-Nucleon Long-Range Interactions in Diatomic eEDM Searches. Physical Review Letters. 2024
- Incorporating reduced axis system embedding into ab initio tunnelling-rotation Hamiltonians with curvilinear vibrational Møller-Plesset perturbation theory. Molecular Physics. 2024
- Rotational Spectrum of the Phenoxy Radical. Journal of Physical Chemistry Letters. 5063-5069. 2024
- Calcium Chemistry in Carbon-rich Circumstellar Environments: The Laboratory and Astronomical Discovery of Calcium Dicarbide, CaC₂. Astrophysical Journal Letters. 2024
- Laboratory rotational spectroscopy of the magnesium-carbon chains MgC4 H and MgC3 N. Journal of Molecular Spectroscopy. 2024
- Rotational detection of the silicon-carbon chains H2C3Si and HSiCCH. Journal of Molecular Spectroscopy. 2024
- Direct Probes of π-Delocalization in Prototypical Resonance-Stabilized Radicals: Hyperfine-Resolved Microwave Spectroscopy of Isotopic Propargyl and Cyanomethyl. Journal of the American Chemical Society. 1512-1521. 2024
- Astronomical CH₃⁺ rovibrational assignments: A combined theoretical and experimental study validating observational findings in the d203-506 UV-irradiated protoplanetary disk. Astronomy and Astrophysics (A & A). 2023
- Detection and modelling of CH₃NC in TMC-1. Monthly Notices of the Royal Astronomical Society. 2154-2171. 2023
- Ergodicity breaking in rapidly rotating C₆₀ fullerenes. Science. 778-783. 2023
- Structural and electronic trends of optical cycling centers in polyatomic molecules revealed by microwave spectroscopy of MgCCH, CaCCH, and SrCCH. Proceedings of the National Academy of Sciences of the United States of America. 2023
- Hyperfine-Resolved Rotational Spectroscopy of Phenyl Radical. Journal of Physical Chemistry Letters. 5370-5376. 2023
- Detection of Interstellar E-1-cyano-1,3-butadiene in GOTHAM Observations of TMC-1. The Astrophysical Journal (ApJ). 2023
- Rotational spectra of twenty-one vibrational states of [³⁵Cl]-and [³⁷Cl]-chlorobenzene. Journal of Molecular Spectroscopy. 2023
- Astronomical Detection of the Interstellar Anion C₁₀H^- toward TMC-1 from the GOTHAM Large Program on the Green Bank Telescope. Astrophysical Journal Letters. 2023
- Laboratory and Astronomical Discovery of Magnesium Dicarbide, MgC₂. Astrophysical Journal Letters. 2022
- Ring-Opening Dynamics of the Cyclopropyl Radical and Cation: the Transition State Nature of the Cyclopropyl Cation. Journal of the American Chemical Society. 2022
- Discovery of Interstellar 2-Cyanoindene (2-C₉H₇CN) in GOTHAM Observations of TMC-1. Astrophysical Journal Letters. 2022
- Franck-Condon spectra of unbound and imaginary-frequency vibrations via correlation functions: A branch-cut free, numerically stable derivation. Journal of Chemical Physics. 2022
- Collision-Induced C₆₀Rovibrational Relaxation Probed by State-Resolved Nonlinear Spectroscopy. PRX Quantum. 2022
- A Search for Heterocycles in GOTHAM Observations of TMC-1. Journal of Physical Chemistry A. 2716-2728. 2022
- Rotational spectrum of anti- and gauche-4-cyano-1-butyne (C₅H₅N)-An open-chain isomer of pyridine. Journal of Molecular Spectroscopy. 2022
- Carbon-13 studies of sulphur-terminated carbon chains: chemical bonding, molecular structures, and formation pathways. Molecular Physics. 2021
- Vibronic mean-field and perturbation theory for Jahn-Teller and pseudo-Jahn-Teller molecules. Molecular Physics. 2021
- Elaborated thermochemical treatment of HF, CO, N₂, and H₂O: Insight into HEAT and its extensions. Journal of Chemical Physics. 2021
- Ultrasensitive multispecies spectroscopic breath analysis for real-time health monitoring and diagnostics. Proceedings of the National Academy of Sciences of the United States of America. 2021
- Anomalous Intensities in the Infrared Emission of CH⁺ Explained by Quantum Nuclear Motion and Electric Dipole Calculations. The Astrophysical Journal (ApJ). 2021
- Observations and Analysis of CH⁺ Vibrational Emissions from the Young, Carbon-rich Planetary Nebula NGC 7027: A Textbook Example of Chemical Pumping. The Astrophysical Journal (ApJ). 2021
- Discovery of the Pure Polycyclic Aromatic Hydrocarbon Indene (c-C9H8) with GOTHAM Observations of TMC-1. Astrophysical Journal Letters. 2021
- Interstellar Detection of 2-cyanocyclopentadiene, C₅H₅CN, a Second Five-membered Ring toward TMC-1. Astrophysical Journal Letters. 2021
- Exhaustive Product Analysis of Three Benzene Discharges by Microwave Spectroscopy. Journal of Physical Chemistry A. 5170-5181. 2020
- Synchrotron-Based High Resolution Far-Infrared Spectroscopy of trans-Butadiene. Journal of Physical Chemistry A. 2427-2435. 2020
- Photodissociation transition states characterized by chirped pulse millimeter wave spectroscopy. Proceedings of the National Academy of Sciences of the United States of America. 146-151. 2020
- Frontispiece: The Hunt for Elusive Molecules: Insights from Joint Theoretical and Experimental Investigations. Chemistry - A European Journal. 2019
- The Hunt for Elusive Molecules: Insights from Joint Theoretical and Experimental Investigations. Chemistry - A European Journal. 7243-7258. 2019
- Rotational Characterization of the Elusive gauche-Isoprene. Journal of Physical Chemistry Letters. 1981-+. 2019
- Rovibrational quantum state resolution of the C₆₀ fullerene. Science. 49-+. 2019
- Broadband molecular spectroscopy with optical frequency combs. Journal of Molecular Spectroscopy. 66-78. 2019
- Fourth-order vibrational perturbation theory with the Watson Hamiltonian: Report of working equations and preliminary results. Journal of Chemical Physics. 2018
- The Molecular Structure of gauche-1,3-Butadiene: Experimental Establishment of Non-planarity. Angewandte Chemie International Edition. 1821-1825. 2018
- The Molecular Structure of gauche‐1,3‐Butadiene: Experimental Establishment of Non‐planarity. Angewandte Chemie International Edition. 1839-1843. 2018
- Direct measurements of DOCO isomers in the kinetics of OD. Science Advances. 2018
- The equilibrium structure of hydrogen peroxide. Journal of Molecular Spectroscopy. 92-95. 2018
- Active Thermochemical Tables: The Adiabatic Ionization Energy of Hydrogen Peroxide. Journal of Physical Chemistry A. 8799-8806. 2017
- OD plus CO → D + CO₂ branching kinetics probed with time-resolved frequency comb spectroscopy. Chemical Physics Letters. 91-95. 2017
- Sensitivity and resolution in frequency comb spectroscopy of buffer gas cooled polyatomic molecules. Applied Physics B: Lasers and Optics. 2016
- Three-photon absorption in optical parametric oscillators based on OP-GaAs. Optics Letters. 5405-5408. 2016
- Ab initio effective rotational and rovibrational Hamiltonians for non-rigid systems via curvilinear second order vibrational Moller-Plesset perturbation theory. Journal of Chemical Physics. 2016
- Direct frequency comb measurement of OD plus CO → DOCO kinetics. Science. 444-448. 2016
- Continuous probing of cold complex molecules with infrared frequency comb spectroscopy. Nature. 517-+. 2016
- Spectroscopic characterization of isomerization transition states. Science. 1338-1342. 2015
- Photoelectron Spectroscopy of the Methide Anion: Electron Affinities of •CH₃ and •CD₃ and Inversion Splittings of CH₃^- and CD₃^-. Journal of the American Chemical Society. 12939-12945. 2015
- Probing cis-trans isomerization in the S-1 state of C2H2 via H-atom action and hot band-pumped IR-UV double resonance spectroscopies. Journal of Chemical Physics. 2015
- Communication: The ground electronic state of Si2C: Rovibrational level structure, quantum monodromy, and astrophysical implications. Journal of Chemical Physics. 2015
- DISCOVERY OF SiCSi IN IRC+10216: A MISSING LINK BETWEEN GAS AND DUST CARRIERS OF Si-C BONDS. Astrophysical Journal Letters. 2015
- Discovery of a Missing Link: Detection and Structure of the Elusive Disilicon Carbide Cluster. Journal of Physical Chemistry Letters. 2107-2111. 2015
- Reduced dimension rovibrational variational calculations of the S-1 state of C2H2. I. Methodology and implementation. Journal of Chemical Physics. 2014
- Reduced dimension rovibrational variational calculations of the S-1 state of C2H2. II. The S-1 rovibrational manifold and the effects of isomerization. Journal of Chemical Physics. 2014
- The (A)over-tilde¹A_u state of acetylene: ungerade vibrational levels in the region 45,800-46,550 cm^-1. Molecular Physics. 2707-2723. 2012

Teaching

courses taught

PHYS 7550 - Atomic and Molecular Spectra
Primary Instructor - Fall 2025
Covers theory of atomic structure and spectra, including coupling of angular momenta, tensor operators, energy levels, fine and hyperfine structure, transition probabilities, Zeeman and Stark effects. Molecular spectra: electronic, vibrational, and rotational states. Rotation matrices, symmetric top.

International Activities

geographic focus

Israel Country
Italy Country