Effects of the Hyperfine Interaction on Orbital Electron Capture

Folan, Lorcan M.; Tsifrinovich, V. I.

doi:10.1103/physrevlett.74.499

Cited by 36 publications

(42 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This means that the capture rate is dominated by K-shell electrons since λ K /λ L ≈ 2 3 = 8, λ K /λ M ≈ 3 3 = 27, etc. Possible deviations from this simple assumption have been predicted for highly-charged atoms [16]. It is clear that fully-ionized 7 Be ions are stable.…”

Section: Half-lives Of 7 Be In Different Atomic Charge Statesmentioning

confidence: 93%

“…The decay of 10 MeV/nucleon 11 Be into 10 Be + p would produce protons at a maximum angle of 9.9 degrees, with energies between 7 MeV and 13.5 MeV. The α particles from the decay of 16 N would, in the region of interest for astrophysics, by emitted within a cone of 8 degrees with energies between 30 MeV and 50 MeV. Detection of the emitted light ions could take place in charged-particle detectors, which would provide energy and trajectory information.…”

Section: In-flight Beta-decay Of Light Exotic Nucleimentioning

confidence: 99%

“…The measured equilibrium emittances x,y , defined by 1σ value of the spatial distribution, and the longitudinal momentum spread ∆p/p (∆p is the standard deviation of a Gaussian distribution) in the equilibrium between intrabeam scattering and electron cooling (n e = 8 · 10 6 cm −3 ) are shown as function of the particle number in Figure 50 [218]. The measurements have been done for D + , 6 Li 3+ , 12 C 6+ , and 16 O 8+ ion beams at a velocity of β=0.11. For a given particle number, emittances and momentum spread increase with increasing charge.…”

Section: Equilibrium Emittances and Momentum Spreadmentioning

confidence: 99%

“…The detection of the emitted particles serves at once for the identification of the decay paths, and to collect additional information about the structure of the populated states. Recent experimental results in this field include, among others, the study of unbound states of astrophysical relevance in 12 C [27], the β-delayed deuteron emission of 11 Li [28], the determination of the E1 component of the 12 C(α,γ) 16 O cross section through the measurement of the β-delayed α decay of 16 N [29].…”

Section: In-flight Beta-decay Of Light Exotic Nucleimentioning

confidence: 99%

See 3 more Smart Citations

Storage ring at HIE-ISOLDE

Grieser

Litvinov

Raabe

et al. 2012

Eur. Phys. J. Spec. Top.

113

View full text Add to dashboard Cite

We propose to install a storage ring at an ISOL-type radioactive beam facility for the first time. Specifically, we intend to install the heavy-ion, low-energy ring TSR at the HIE-ISOLDE facility in CERN, Geneva. Such a facility will provide a capability for experiments with stored secondary beams that is unique in the world. The envisaged physics programme is rich and varied, spanning from investigations of nuclear groundstate properties and reaction studies of astrophysical relevance, to investigations with highly-charged ions and pure isomeric beams. The TSR can also be used to remove isobaric contaminants from stored ion beams and for systematic studies within the neutrino beam programme. In addition to experiments performed using beams recirculating within the ring, cooled beams can also be extracted and exploited by external spectrometers for high-precision measurements. The existing TSR, which is presently in operation at the Max-Planck Institute for Nuclear Physics in Heidelberg, is well-suited and can be employed for this purpose. The physics cases, technical details of the existing ring facility and of the beam requirements at HIE-ISOLDE, together with the cost, time and manpower estimates for the transfer, installation and commissioning of the TSR at ISOLDE are discussed in the present technical design report.

show abstract

Section: Half-lives Of 7 Be In Different Atomic Charge Statesmentioning

confidence: 93%

Section: In-flight Beta-decay Of Light Exotic Nucleimentioning

confidence: 99%

Section: Equilibrium Emittances and Momentum Spreadmentioning

confidence: 99%

Section: In-flight Beta-decay Of Light Exotic Nucleimentioning

confidence: 99%

See 2 more Smart Citations

Storage ring at HIE-ISOLDE

Grieser

Litvinov

Raabe

et al. 2012

Eur. Phys. J. Spec. Top.

113

View full text Add to dashboard Cite

show abstract

“…The directed neutrino beam can be switched and modulated by manipulation of the magnitude and direction of the magnetic field. It was also shown that electron capture beta-decay in hydrogen-like ions is extremely sensitive to the hyperfine interaction [4] [5] [6] [7] [8]. In fact, the decay from one of the hyperfine states can be completely forbidden.…”

Section: Introductionmentioning

confidence: 99%

Generation and Detection of a Directed Monoenergetic Neutrino Beam with Hydrogen-Like Ions

Folan¹,

Tsifrinovich²

2017

WJNST

View full text Add to dashboard Cite

We consider two possible schemes for generation and detection of a monoenergetic directed beam of neutrinos which may have application to neutrino communication. First, we consider generation of a directed neutrino beam using electron capture beta decay in hydrogen-like ions. Next, we suggest detection of a directed neutrino beam using resonant absorption of a neutrino by a bare nucleus with the generation of a bound electron. This reaction is inverse to electron capture beta decay, and we call it "Bound State Inverse Beta Decay (BSIBD)". We show that the recoil effect can be eliminated by an appropriate choice of velocities for the ions and bare nuclei. Finally, we consider a combination of a solid state source of a directed mono-energetic neutrino beam and its detection using BSIBD.

show abstract

Mass and lifetime measurements of exotic nuclei in storage rings

Franzke

Geißel

Münzenberg

2008

Mass Spectrometry Reviews

222

189

View full text Add to dashboard Cite

Mass and lifetime measurements lead to the discovery and understanding of basic properties of matter. The isotopic nature of the chemical elements, nuclear binding, and the location and strength of nuclear shells are the most outstanding examples leading to the development of the first nuclear models. More recent are the discoveries of new structures of nuclides far from the valley of stability. A new generation of direct mass measurements which allows the exploration of extended areas of the nuclear mass surface with high accuracy has been opened up with the combination of the Experimental Storage Ring ESR and the FRragment Separator FRS at GSI Darmstadt. In-flight separated nuclei are stored in the ring. Their masses are directly determined from the revolution frequency. Dependent on the half-life two complementary methods are applied. Schottky Mass Spectrometry SMS relies on the measurement of the revolution frequency of electron cooled stored ions. The cooling time determines the lower half-life limit to the order of seconds. For Isochronous Mass Spectrometry IMS the ring is operated in an isochronous ion-optical mode. The revolution frequency of the individual ions coasting in the ring is measured using a time-of-flight method. Nuclides with lifetimes down to microseconds become accessible. With SMS masses of several hundreds nuclides have been measured simultaneously with an accuracy in the 2 x 10(-7)-range. This high accuracy and the ability to study large areas of the mass surface are ideal tools to discover new nuclear structure properties and to guide improvements for theoretical mass models. In addition, nuclear half-lives of stored bare and highly charged ions have been measured. This new experimental development is a significant progress since nuclear decay characteristics are mostly known for neutral atoms. For bare and highly charged ions new nuclear decay modes become possible, such as bound-state beta decay. Dramatic changes in the nuclear lifetime have been observed in highly charged ions compared to neutral atoms due to blocking of nuclear decay channels caused by the modified atomic interaction. High ionization degrees prevail in hot stellar matter and thus these experiments have great relevance for the understanding of the synthesis of elements in the universe and astrophysical scenarios in general.

show abstract

Effects of the Hyperfine Interaction on Orbital Electron Capture

Cited by 36 publications

References 14 publications

Storage ring at HIE-ISOLDE

Storage ring at HIE-ISOLDE

Generation and Detection of a Directed Monoenergetic Neutrino Beam with Hydrogen-Like Ions

Mass and lifetime measurements of exotic nuclei in storage rings

Contact Info

Product

Resources

About