Angular correlations between sequential cascading photons from [ital n]=3 atomic hydrogen

Journal Article · Mon Mar 01 00:00:00 EST 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.1240· OSTI ID:6687603

Williams, J F ^[1]; Kumar, M; Stelbovics, A T ^[2]

---

1. Centre for Atomic, Molecular and Surface Physics, Department of Physics, The University of Western Australia, Perth 6009 (Australia)
2. Centre for Atomic, Molecular and Surface Physics, School of Mathematical and Physical Sciences, Murdoch University, Perth 6150 (Australia)

We report the first measurements and associated theory for angular correlations of sequential cascading photons for an atomic system in which a scattering plane is defined. The cascade radiation from the [ital n]=3 levels of atomic hydrogen excited by 290 eV electrons is observed. The first determinations of a rank-4 multipole and of the magnetic sublevels of the 3[ital d] state have been made. The measured angular correlations and the deduced multipole moments have order-of-magnitude agreement with Glauber, Born, and six-state close-coupling model predictions.

• OSTI ID: 6687603
• Journal Information: Physical Review Letters; (United States), Vol. 70:9; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ELECTRON-ATOM COLLISIONS
PHOTON EMISSION
HYDROGEN
ANGULAR CORRELATION
COINCIDENCE SPECTROMETRY
EXCITATION
EXPERIMENTAL DATA
GAMMA RADIATION
MULTIPOLES
QUANTUM NUMBERS
ATOM COLLISIONS
COINCIDENCE METHODS
COLLISIONS
CORRELATIONS
COUNTING TECHNIQUES
DATA
ELECTROMAGNETIC RADIATION
ELECTRON COLLISIONS
ELEMENTS
EMISSION
ENERGY-LEVEL TRANSITIONS
INFORMATION
IONIZING RADIATIONS
NONMETALS
NUMERICAL DATA
RADIATIONS
664300* - Atomic & Molecular Physics- Collision Phenomena- (1992-)
664100 - Theory of Electronic Structure of Atoms & Molecules- (1992-)