Chemical-bond dependence of Coulomb capture of pions in transition-metal borides

Abstract

Atomic Coulomb capture ratios A(B,M) for pions have been measured in chromium, iron, and nickel borides. Those for mixtures of respective metals and boron were also obtained. The ratios for the compounds are less than half of those of the mixtures and depend on the species of the borides. These results for the borides are not predicted by any model. The mesomolecular model revised to take account of the Auger process reproduces the present results. The electron charge densities deduced by applying the model are compared with theoretical predictions.

References

Page 1

	Year	Citations
On coulomb capture ratios of negative mesons in chemical compounds H. Schneuwly, V.I. Pokrovsky Nuclear Physics A Coulomb Capture RatiosEngineeringPhysicsNatural SciencesParticle Physics	1978	109
Average muonic Coulomb capture probabilities for 65 elements T. von Egidy, F. J. Hartmann Physical review. A, General physics Materials ScienceX-ray CrystallographyCapture ProbabilitiesX-ray SpectroscopyEngineering	1982	68
Measurement of the Muonic X-Ray Cascade in Metallic Iron F. J. Hartmann, T. von Egidy, Ralf B. Bergmann, Physical Review Letters Nuclear AstrophysicsX-ray SpectroscopyEngineeringPhysicsNatural Sciences	1976	67
Study of the iron borides. IV. Relation of bonding to structure and magnetic behavior from photoemission experiments and<i>ab initio</i>calculations David J. Joyner, Oliver Johnson, David M. Hercules, Physical review. B, Condensed matter	1981	50
Pion-capture probabilities in organic molecules Daphne F. Jackson, C. A. Lewis, K. O'Leary Physical review. A, General physics Atomic-capture ProbabilitiesOrganic MoleculesNegative PionsEngineeringPhysics	1982	43
Coulomb capture of muons and atomic radius H. Daniel The European Physical Journal A EngineeringPhysicsNatural SciencesParticle PhysicsApplied Physics	1979	41
Calculation of muonic Coulomb-capture probabilities from electron binding energies T. von Egidy, D. H. Jakubaßa-Amundsen, F. J. Hartmann Physical review. A, General physics Quantum ScienceElectron Quantum NumbersQuantum ComputingPhysicsEngineering	1984	33
Capture of negative muons in cubic and hexagonal structures of carbon and boron nitride H. Schneuwly, M. Boschung, K. Kaeser, Physical review. A, General physics X-ray SpectroscopyHexagonal StructuresEngineeringCubic Boron NitrideSynchrotron Radiation Source	1983	32
Target-density effects in muonic-atom cascades J.D. Knight, C. J. Orth, M. E. Schillaci, Physical review. A, General physics Heavy Ion PhysicX-ray SpectroscopyEngineeringPhysicsNatural Sciences	1983	26
Atomic Structure Effects in Negative Meson Capture R. Kunselman, J. Law, M. Leon, Physical Review Letters Electron DensityNegative Meson CapturePositron-annihilation LifetimesPhysicsTarget Atoms	1976	25

Page 1