Measurement of kaonic X-rays from Li, LiH AND Be

doi:10.1016/0375-9474(77)90072-0

Nuclear Physics A

Volume 282, Issue 3, 30 May 1977, Pages 487-492

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Abstract

We have observed X-rays from kaons stopping in targets of Li, LiH and Be. The strong interaction widths, shifts and relative yield of the last observed X-ray have been measured. There is evidence for a difference in the yield of the n = 3 → 2 Li X-rays in Li metal and LiH. There is no evidence in the spectra for X-rays from kaonic hydrogen formed in LiH.

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Cited by (16)

Density-dependent K- nuclear optical potentials from kaonic atoms
1994, Nuclear Physics, Section A
The density depedence of the K⁻ optical potential V_opt(r) at zero kinetic energy is studied by fitting it to a comprehensive set of atomic data across the periodic table. Two families of solutions offering improved fits over that for a t_effϱ(r) parameterization are identified, one containing solutions for V_opt with r.m.s. radii larger than those of the matter density ϱ, as expected from finite-range folding corrections. The other gives rise to Re V_opt of a size smaller than that of ϱ. The latter family offers substantially improved fits to the data, with particularly strong attraction inside the nucleus (200 ± 20 MeV). For a subfamily of solutions, V_opt becomes repulsive at large distances, and solutions satisfying the low-density limit $V_{opt} → t_{KN} ϱ$ can be found. Comments are made on the relevance of Λ(1405) nuclear dynamics to these findings.
Microscopic kaonic-atom optical potential in finite nuclei with Λ(1405) and Σ(1385) resonances
1994, Nuclear Physics, Section A
We derive kaonic-atom optical potentials in finite nuclei microscopically by taking into account the K⁻ NΛ(1405) and K⁻ NΣ(1385) interactions. Using the microscopic optical potentials we solve kaonic atoms with the Klein-Gordon equation in momentum space and obtain the kaonic-atom level shifts and the widths. The experimental data are reproduced well. We discuss also phenomenological optical potentials and compare them with the microscopic ones. In addition, we derive optical potentials in the local-density approximation with the use of the finite-matter kaon self-energy. We find a similarity with the microscopic optical potential derived with finite geometry.
On possibilities of narrow nuclear states of K-
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Data for kaonic atoms are fitted using a simple optical model with a potential proportional to the nuclear density. Very satisfactory fits to strong interaction shift and width values are obtained but difficulties in fitting yield values indicate that the model is not completely satisfactory. The potential strength can be related to the free kaon-nucleon scattering lengths using a model due to Deloft. A good overall representation of the data is obtained with a black-sphere model.
Measurement of strong interaction effects in kaonic atoms
1979, Nuclear Physics, Section A
Pionic x-rays and the neutron radius of 44Ca
1979, Physics Letters B

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^†: On leave form Virginia Polytechnic Institute and State University. Blacksburg, Virginia, USA.

^††: Now at MIT, Cambridge, Massachusetts, USA.

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Nuclear Physics A

Abstract

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Nucl. Instr.

Nucl. Instr.

Phys.Rev.

Phys. Lett.

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Phys. Rev.

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Phys. Rev. Lett.

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Density-dependent K<sup>-</sup> nuclear optical potentials from kaonic atoms

Microscopic kaonic-atom optical potential in finite nuclei with Λ(1405) and Σ(1385) resonances

On possibilities of narrow nuclear states of K<sup>-</sup>

Optical-model analysis of exotic atom data. (I). Kaonic atoms

Measurement of strong interaction effects in kaonic atoms

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