Abstract
Near-infrared chemiluminescent emission from NeMu*, the analogue of the Rydberg molecule NeH, has been observed in Ne, Ar, and Ne/Ar gas mixtures. Three temporally distinct features were observed: First, a large sharp emission peak at time zero, observed in all gases (Ne, He, N2, Ar), is assigned to scintillation light during muon thermalization, probably caused by spur electrons. Second, a lowintensity broad region observed in all gases is attributed to e+ from muon decay. Finally, NeMu in 1–6 atm Ne with 0.1–2 torr Ar appeared as a high intensitydelayed emission, whose width and intensity depended linearly on the Ar concentration. Its wavelength spectrum from 680–960 nm was measured. Although questions remain as to how NeMu* is formed, the precursor is likely Neμ +. Possible electron donors include metastable Ar* (3 P 2 or3 P 0) and long-lived free (spur) electrons.
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S. Baer, D. G. Fleming, J. J. Sloan, M. Kolbuszewski, J. Wright, D. J. Arseneau, M. Senba, R. Snooks, and J. J. Pan, J. Chem. Phys., submitted.
T. Matsuzaki, K. Ishida, K. Nagamine, T. Hirata, and R. Kadono, Muon Cat. Fusion2 (1988) 217.
A. O. Weissenberg,Muons (North Holland, 1967); H. S. W. Massey, E. H. S. Burhop, and H. B. Gilbody,Slow Positron and Muon Collisions (Oxford-Clarendon Press, 1974).
D. C. Walker,Muon and Muonium Chemistry (Cambridge University Press, Cambridge, 1983).
J. Reader, C. H. Corliss, W. L. Wiese, and G. A. Martin,Wavelengths and Transition Probabilities for Atoms and Atomic Ions, Nat. Stand. Ref. Data Ser., Nat. Bur. Stand. (US)68 (1980).
P. W. Percival, Hyp. Int.65 (1990) 901; V. N. Gorelkin and L. P. Kotova, ibid, 793; P. W. Percival, E. Roduner, and H. Fischer, Chem. Phys.32 (1978) 353.
R. Kadono, A. Matsushita, and K. Nagamine, Phys. Rev. Lett.67 (1991) 3689; Phys. Rev. B, in press.
D. J. Arseneau, D. G. Fleming, M. Senba, I. D. Reid, and D. M. Garner, Can. J. Chem.66 (1988) 2018.
D. G. Fleming, R. J. Mikula, and D. M. Garner, Phys. Rev.A 26 (1983) 2527.
C. E. Moore,Atomic Energy Levels (US Printing Group Office, Washington DC, 1971).
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Contribution from CEMAID, Center of Excellence in Molecular and Interfacial Dynamics; the financial support afforded by participation in Canada's National Centers of Excellence program is greatly appreciated.
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Baer, S., Arseneau, D.J., Fleming, D.G. et al. NeMu* chemiluminescence: Radiolysis effects in gases. Hyperfine Interact 87, 985–990 (1994). https://doi.org/10.1007/BF02068494
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DOI: https://doi.org/10.1007/BF02068494