Nuclear sizes and the isotope shift

Friar, J. L.; Martorell, J.; Sprung, D. W. L.

doi:10.1103/physreva.56.4579

Cited by 161 publications

(170 citation statements)

References 52 publications

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“…This analysis was further improved in [329] where also the virtual excitations of the deuteron in the electron-deuteron scattering were considered. Now the values of the deuteron matter radius extracted from the low energy nucleon-nucleon interaction [163] and from the low energy elastic electrondeuteron scattering [189,329] are in agreement, and do not contradict the optical data in eq. (400), eq.(401).…”

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confidence: 74%

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Theory of light hydrogenlike atoms

2001

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The present status and recent developments in the theory of light hydrogenic atoms, electronic and muonic, are extensively reviewed. The discussion is based on the quantum field theoretical approach to loosely bound composite systems. The basics of the quantum field theoretical approach, which provide the framework needed for a systematic derivation of all higher order corrections to the energy levels, are briefly discussed. The main physical ideas behind the derivation of all binding, recoil, radiative, radiative-recoil, and nonelectromagnetic spin-dependent and spin-independent corrections to energy levels of hydrogenic atoms are discussed and, wherever possible, the fundamental elements of the derivations of these corrections are provided. The emphasis is on new theoretical results which were not available in earlier reviews. An up-to-date set of all theoretical contributions to the energy levels is contained in the paper. The status of modern theory is tested by comparing the theoretical results for the energy levels with the most precise experimental results for the Lamb shifts and gross structure intervals in hydrogen, deuterium, and helium ion He + , and with the experimental data on the hyperfine splitting in muonium, hydrogen and deuterium. *

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confidence: 74%

“…This means that calculating this correction we will treat the nucleus as a particle which interacts with the photons via its nontrivial Sachs electric and magnetic form factors in eq. (163). As usual we start consideration of the contributions of order (Zα)E F with the infrared divergent integral eq.…”

Section: XXXIVmentioning

confidence: 99%

Theory of light hydrogenlike atoms

2001

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“…n was used, which takes into account contributions from the mean-square charge radii of the proton and neutron (with R 2 p = 0.769(12) fm 2 and R 2 n = −0.1161(22) fm 2 [13]) and the Darwin-Foldy term 3 4M 2 p = 0.033 fm 2 [14]. The effects of nuclear spin-orbit interaction and meson exchange currents, expected to be on the order of or below the experimental uncertainties, are not taken into account and will require further theoretical investigation.…”

Section: The Mass Shift δν Msmentioning

confidence: 99%

Nuclear Charge Radius ofHe8

et al. 2007

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The root-mean-square (rms) nuclear charge radius of 8 He, the most neutron-rich of all particlestable nuclei, has been determined for the first time to be 1.93(3) fm. In addition, the rms charge radius of 6 He was measured to be 2.068(11) fm, in excellent agreement with a previous result.The significant reduction in charge radius from 6 He to 8 He is an indication of the change in the correlations of the excess neutrons and is consistent with the 8 He neutron halo structure. The experiment was based on laser spectroscopy of individual helium atoms cooled and confined in a magneto-optical trap. Charge radii were extracted from the measured isotope shifts with the help of precision atomic theory calculations. * Electronic address: pmueller@anl.gov 1

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“…[15]). Minimal nonlocality fixes the representation, eliminates off-shell ambiguities, and specifies the form of the dominant part of the potential (such as OPEP).…”

Section: Introductionmentioning

confidence: 99%

TheAypuzzle and the nuclear force

Hüber

Friar

1998

Phys. Rev. C

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The nucleon-deuteron analyzing power A y in elastic nucleon-deuteron scattering poses a longstanding puzzle. At energies E lab below approximately 30MeV A y cannot be described by any realistic NN force. The inclusion of existing three-nucleon forces does not improve the situation. Because of recent questions about the 3 P J NN phases, we examine whether reasonable changes in the NN force can resolve the puzzle. In order to do this we investigate the effect on the 3 P J waves produced by changes in different parts of the potential (viz., the central force, tensor force, etc.), as well as on the 2-body observables and on A y . We find that it is not possible with reasonable changes in the NN potential to increase the 3-body A y and at the same time to keep the 2-body observables unchanged. We therefore conclude that the A y puzzle is likely to be solved by new three-nucleon forces, such as those of spin-orbit type, whichhave not yet been taken into account.PACS numbers:

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Nuclear sizes and the isotope shift

Cited by 161 publications

References 52 publications

Theory of light hydrogenlike atoms

Theory of light hydrogenlike atoms

Nuclear Charge Radius ofHe8

TheAypuzzle and the nuclear force

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