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Submitted on 1 Jan 1974
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MÖSSBAUER EXPERIMENT WITH 57FE+(3d6 4s) IONS ISOLATED IN A XENON MATRIX
H. Micklitz, F. Litterst
To cite this version:
H. Micklitz, F. Litterst. MÖSSBAUER EXPERIMENT WITH 57FE+(3d6 4s) IONS ISOLATED IN A XENON MATRIX. Journal de Physique Colloques, 1974, 35 (C6), pp.C6-213-C6-213.
�10.1051/jphyscol:1974624�. �jpa-00215781�
ELECTRON DENSITIES AND ISOMER SHIFT CORRELATIONS.
MOSSBAUER EXPERIMENT WITH 5 7 ~ e f ( 3 d 6 4s) IONS ISOLATED IN A XENON MATRIX (*)
H. MICKLITZ and F. J. LITTERST
Physik Department El5 der Technischen Universitat Miinchen D-8046 Garching, James-Franck-Str., Germany
R6sum6. - Des ions 57Fe+(3d6 4s) ont kt6 produits par irradiation UV d'une matrice de xenon contenant 0,65
%
de 57Fe. Ces ions ont pu &re stabilises en ajoutant B la matrice environ 1%
de HI jouant le r61e d'accepteur d'6lectrons. Le spectre Mossbauer de 57Fe dans la matrice de Xe(H1) mesur6 avant I'irradiation UV comporte une seule raie de resonance(r
= 0,70 mm/s) avec un IS de - (0,74*
0,02) mm/s par rapport au fer m6tallique & 300 K. Apres une irradiation UV de 15 h( - 3
x
1020 photons/cm2) la raie unique d'atomes isolks de 57Fe a completement disparu. Elle estremplacke par le doublet quadrupolaire de Fe+ avec IS = (0,26 f 0,03) mm/s par rapport au fer metal & 300 K et AEQ = (1,51 rt 0,03) mm/s. De cet IS, on deduit le rapport des densites Blectro- niques au site du noyau 57Fe :
Abstract. - 57Fe+(3d6 4s) ions have been produced by UV irradiation of a xenon matrix contain- ing 0.65
%
57Fe. These ions could be stabilized by mixing-
1 % of HI as an electron acceptor into the Xe matrix gas. The Mossbauer spectrum of the s7Fe doped Xe(H1) matrix taken before UV irradiation shows a single resonance line(r
= 0.70 mm/s) with an IS of - (0.74 f 0.02) mm/s against iron metal at 300 K. After 15 hours of UV irradiation (-
3 x 1020 photons/cmZ) the single resonance. line from isolated s7Fe atoms has completely disappeared. Instead the quadrupole doublet of the Fe+ appeared with IS = (0.26 & 0.03) mm/s against Fe metal at 300 K and AEQ = (1.51+
0.03) mm/s. From this IS we obtain the ratio of the electron densities at the 57Fe nucleus[~(0)3d64s2 - ~(0)3d~]/[~(0)3d~4s
-
~(0)3d6] = 1.80+
0.15.
References [I] BARRETT, P. H. and MICKLITZ, H., in Perspectives in Moss-
bauer Spectroscopy, edited by S. G. Cohen and M. Pas- ternak (Plenum, New York) 1973, p. 117, and references contained therein.
[2] MICKLITZ, H. and BARRETT, P. H., Phys. Rev. Lett. 28 (1972) 1547.
[3] MICKLITZ, H., BARRETT, P. H., WABER, J. T. and HOI-SING KWOH, J. Phys. B (to be published).
141 KASAI, P. H.. Phys. Rev. Lett. 21 (1968) 67.
[5] MULLIKEN, R. S., Phys. Rev. 51 (1937) 310.
[6] MANN, D. M. and BROIDA, H. P., J, Chem. Phys. 55 (1971) 84.
[7] GERTH, G., LUCHNER, K. and MICKLITZ, H., Phys. Stat. Sol.
(b) 53 (1972) 593.
[8] MCNAB, T. K. and BARRETT, P. H., in Mossbauer Effect Methodology (Plenum, New York) 1971, Vol. 7, p. 59.
[9] MCNAB, T. K., MICKLITZ, H. and BARRETT, P. H., Phys.
Rev. B 4 (1971) 3787.
[lo] SCHLAEFER, H. L. and GLIEMANN, G., Einfuhrung in die Ligandenfeldtheorie (Akad. Verlagsgesellsch., Frank- furt), 1967, p. 351f.
[ll] BLOMQUIST, J., ROOS, B. and SUNDBOM, M., J. Clzem. Phys.
55 (1971) 141.
[12] SHIRLEY, D. A,, Rev. Mod. Phys. 36 (1964) 339.
[13] DUFF, K. J., Phys. Rev. B 9 (1974) 66.
[14] KALVIUS, G. M. and SHENOY, G. K., Nucl. Data (to be published).
1151 RUEGSEGGER, R. and KUENDIG, W., Phys. Lett. 39B (1972) 620.
[I61 VERMA, R. N. and EMERY, G. T., Phys. Rev. B 9 (1974) 3666.
[17] MICKLITZ, H. and BARRETT, P. H., Appl. Phys. Lett. 20 (1972) 387.
[18] KLEE, C., MCNAB, T. K., LITTERST, F. J. and MICKLITZ, H., submitted to 2. Phys.
[I91 KASAI, P. H. and MCLEAD, D., J. Chem. Phys. 55 (1971) 1566.
[20] KOPFERMANN, H., Kernmomente (Akad. Verlagsgesellsch., Frankfurt) 1956, p. 164.
[21] BLAISE, J. and STEUDEL, A., 2. Phys. 209 (1968) 311.
[22] COULTHARD, M. A., J. Phys. B 6 (1973) 23.
(*) For detailed article see : Phys. Rev. Lett. 33 (1974) 480.
Article published online by EDP Sciences and available at http://dx.doi.org/10.1051/jphyscol:1974624
