First observation of bound-state β− decay

Jung, Matthias; Bosch, F.; Beckert, K.; Eickhoff, H.; Folger, H.; Franzke, B.; Gruber, A.; Kienle, Paul; Klepper, O.; Koenig, W.; Kozhuharov, C.; Mann, R.C.; Moshammer, R.; Nolden, F.; Schaaf, U.; Soff, G.; Spädtke, P.; Steck, M.; Stöhiker, Th.; Sümmerer, K.

doi:10.1016/0375-9474(93)90631-7

Cited by 28 publications

(39 citation statements)

References 7 publications

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“…Experiments of such a kind have routinely been conducted in the ESR at GSI, Germany for decades [21][22][23][24][25]. With the intensity-sensitive and time-resolving Schottky resonator recently installed in the ESR [26], decays of exotic ions can be investigated on a single-ion basis [27,28].…”

Section: Discussionmentioning

confidence: 99%

Statistical approaches to lifetime measurements with restricted observation times

et al. 2017

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Two generic methods based on frequentism and Bayesianism are presented in this work aiming to adequately estimate decay lifetimes from measured data, while accounting for restricted observation times in the measurements. All the experimental scenarios that can possibly arise from the observation constraints are treated systematically and formulas are derived. The methods are then tested against the decay data of bare isomeric 94m Ru 44+ , which were measured using isochronous mass spectrometry with a timing detector at the CSRe in Lanzhou, China. Applying both methods in three distinct scenarios yields six different but consistent lifetime estimates. The deduced values are all in good agreement with a prediction based on the neutral-atom value modified to take the absence of internal conversion into account. Potential applications of such methods are discussed.

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Section: Discussionmentioning

confidence: 99%

Statistical approaches to lifetime measurements with restricted observation times

et al. 2017

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“…4) Within 1-3 ms after the end of current pulse, gas counters filled with 3 He detected some signals having, in all probability, electromagnetic origin.…”

Section: Discussionmentioning

confidence: 94%

“…Currently, it is beyond doubt that strong external electromagnetic fields can considerably change the probability of nuclear decay and even change the conditions of nuclear stability [1][2][3][4][5][6][7]. For example, complete ionization of 187 Re increases the probability of -decay (due to decay to a bound electron state) [2], while complete ionization of stable isotopes 163 Dy,193 Ir, 205 Tl makes them  --active (the half-life time of completely ionized 163 Dy was 47  5 days [3]).…”

Section: Introductionmentioning

confidence: 99%

“…For example, complete ionization of 187 Re increases the probability of -decay (due to decay to a bound electron state) [2], while complete ionization of stable isotopes 163 Dy,193 Ir, 205 Tl makes them  --active (the half-life time of completely ionized 163 Dy was 47  5 days [3]). Now it is clear that strong external fields affect to one or another extent the probabilities of all nuclear processes, the major effect being mediated by deformation of the atomic electron states (both occupied by electrons and free) [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Study of the Electric Explosion of Titanium Foils in Uranium Salts

Urutskoev¹,

Филиппов²

2010

JMP

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The results of experiments on electroexplosion titanic foil in water solutions of salts of uranium are presented in this paper. It is shown, that as a result of electroexplosion occurs appreciable (to 20%) distortion of an initial isotope parity of uranium. In the most solution parts, observable isotope distortion occurs in favour of enrichment by 235 U. At the moment of electroexplosion it was not observed an appreciable stream of the neutrons. By means of Cs label and by methods by α, β, γ-spectrometry and mass-spectrometry it have been shown, that isotope distortion occurs at the expense of non-uniform "disappearance" of both isotopes from a solution. The isotope distortion leads to infringement of the 234 Th secular equilibrium in the uranyl solution. The equilibrium infringement between the 234 Th and 234m Pa, i.e. within the proper thorium decay chain, was observed also. The assumption about that the effects are caused of low-energy nuclear reactions at the moment of electroexplosion is suggested.

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“…A reflection of this interrelation is, in particular, the experimentally established facts showing that the possibility of radioactive decay of nuclei is determined by the positive difference between the mass of the initial nucleus together with the mass of the electron subsystem of the atom (i.e., the mass of the whole atom, not the nucleus) and the total mass of the decay products [23,24]. Usually, when considering the mechanisms of these low-energy nuclear processes and the decay of atomic nucleus A Z N (Z and A are the atomic number and mass number of the nucleus N, respectively), nuclear matter is represented in the form of interacting nucleons.…”

Section: Electronic Factor In Initiating Nuclear Processesmentioning

confidence: 99%

On Mechanisms of Low-Energy Nuclear-Chemical Processes

Timashev¹

2017

RENSIT

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First observation of bound-state β− decay

Cited by 28 publications

References 7 publications

Statistical approaches to lifetime measurements with restricted observation times

Statistical approaches to lifetime measurements with restricted observation times

Study of the Electric Explosion of Titanium Foils in Uranium Salts

On Mechanisms of Low-Energy Nuclear-Chemical Processes

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