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Radio-Frequency Spectrum of Metastable N2(A3Sigmau+). I. Magnetic Hyperfine and Electric Quadrupole Constants

J. Chem. Phys. 53, 2290 (1970); doi:10.1063/1.1674326

Issue Date: 15 September 1970

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R. S. Freund and T. A. Miller
Bell Telephone Laboratories, Incorporated, Murray Hill, New Jersey 07974

D. De Santis and A. Lurio
IBM Watson Laboratory, New York, New York
Measurements have been made of the rf spectrum of metastable N2(A3Sigmau+) by the molecular beam magnetic resonance method. Transitions obeying selection rules deltaF = 0,deltaMF = ± 1, were observed in states with quantum numbers (N,J,F) equal to (0, 1, 2), (0, 1, 1), (1, 2, 1), (1, 2, 2), (1, 2, 3), (2, 1, 1), and (2, 3, 2). The theoretical basis of this spectrum is presented in detail and used to derive hyperfine constants and the following molecular averages:

[dformula Fermicontact:[summation][sub i][prime](1/2)<delta(r[sub ai])>[sub Phi] = (2.7 [plus-minus] 0.4) x 10[sup 23]cm[sup -3],]

[dformula Electron--nucleardipolar:[summation][sub i][prime](1/2)<r[sub ai][sup -3](3cos[sup 2] omega[sub ai] - 1)>[sub Phi] = (- 4.3 [plus-minus] 0.4) x 10[sup 24]cm[sup -3],]

[dformula Quadrupolecoupling:e[sup 2]q[sub 0]Q / h = - 1.8 [plus-minus] 1.0MHz]

(primes indicate that the summations are to be carried out over only the unpaired electrons). ©1970 American Institute of Physics

History: Received 5 May 1970
Permalink: http://link.aip.org/link/?JCPSA6/53/2290/1
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0021-9606 (print)   1089-7690 (online)
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