Search for superheavy elements in galactic cosmic rays

Bagulya, A.; Kashkarov, L. L.; Konovalova, N. S.; Okateva, N.; Polukhina, N.; Старков, Н. И.

doi:10.1134/s0021364013120047

Cited by 24 publications

(22 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Optical technique is usually used for determination of parameters of etched tracks of heavy nuclei from GCR. Different orientations of these tracks are observed in etched meteorite detector 12,14,16,19 . Due to spatial inhomogeneity of the induced chemical reactivity along SHI trajectories different etching kinetics may realize for tracks differently oriented relative to the sample surface.…”

Section: Applicability Of the Optical Technique For Registration Of Ementioning

confidence: 98%

“…To verify the renewed model, we compared the calculated LERs along the paths of Xe and U ions with the OLYMPIA-experiment calibration database 12,14 for olivine crystals from meteorites. Figure 6 demonstrates a good agreement between the calculated LERs with the experimental results when the optical microscopy visibility threshold of 400 nm is assumed.…”

Section: Modeling Of Chemical Etching Of Shi Tracksmentioning

confidence: 99%

“…Solid lines present the LERs obtained from the modeling. Experimental values are indicated by squares and rhombuses with error bars 14 . Registration threshold of 400 nm is assumed.…”

Section: Modeling Of Chemical Etching Of Shi Tracksmentioning

confidence: 99%

“…In particular, WCE of ion tracks 12 in crystalline olivine (Mg 0.11 Fe 0.89 ) 2 SiO 4 from meteorites pallasites is used to register parameters of heavy nuclei from galactic cosmic rays (GCR) 12,14,16,19 . After SHI passage, a track core of 1 ÷ 10 nm diameter 20 containing highly damaged material and high concentrations of Fe + cations reduced by spreading electrons appears along the heavy ion path in olivine.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Dependence of track etching kinetics on chemical reactivity around the ion path

Горбунов

Rymzhanov

Волков

2019

Sci Rep

View full text Add to dashboard Cite

Etching kinetics of swift heavy ions (SHI) tracks in olivine is investigated in frame of experimentally verified numerical approach. The model takes into account variation of induced chemical reactivity of the material around the whole ion trajectory with the nanometric accuracy. This enables a quantitative description of wet chemical etching of SHI tracks of different lengths and orientations towards to the sample surface. It is demonstrated that two different modes of etching, governed by diffusion of etchant molecules and by their reaction with the material must be observed in experiments using techniques with different resolution thresholds. Applicability limits of the optical microscopy for detection of heavy ion parameters by measuring of the lengthwise etching rates of the ion track are discussed.

show abstract

Section: Applicability Of the Optical Technique For Registration Of Ementioning

confidence: 98%

Section: Modeling Of Chemical Etching Of Shi Tracksmentioning

confidence: 99%

“…Solid lines present the LERs obtained from the modeling. Experimental values are indicated by squares and rhombuses with error bars 14 . Registration threshold of 400 nm is assumed.…”

Section: Modeling Of Chemical Etching Of Shi Tracksmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dependence of track etching kinetics on chemical reactivity around the ion path

Горбунов

Rymzhanov

Волков

2019

Sci Rep

View full text Add to dashboard Cite

show abstract

“…In the OLIMPIYA experiment [40], in the analysis of ≃ 6000 tracks from cosmic rays accumulated during (1 − 3) × 10 8 yr in ≃ 170 olivine crystals extracted from meteorites, three tracks were found which could belong to nuclei with 105 < Z < 130. A more accurate estimation for one of them gave Z = 119 +10 −6 at 95% C.L.…”

Section: Introductionmentioning

confidence: 99%

Search for long-lived superheavy eka-tungsten with radiopure ZnWO₄crystal scintillator

et al. 2015

View full text Add to dashboard Cite

The data collected with a radioactively pure ZnWO4 crystal scintillator (699 g) in low background measurements during 2130 h at the underground (3600 m w.e.) Laboratori Nazionali del Gran Sasso (INFN, Italy) were used to set a limit on possible concentration of superheavy eka-W (seaborgium Sg, Z = 106) in the crystal. Assuming that one of the daughters in a chain of decays of the initial Sg nucleus decays with emission of high energy α particle (Qα > 8 MeV) and analyzing the high energy part of the measured α spectrum, the limit N (Sg)/N (W) < 5.5 × 10 −14 atoms/atom at 90% C.L. was obtained (for Sg half-life of 10 9 yr). In addition, a limit on the concentration of eka-Bi was set by analysing the data collected with a large BGO scintillation bolometer in an experiment performed by another group [L. Cardani et al., JINST 7 (2012) P10022]: N (eka-Bi)/N (Bi) < 1.1 × 10 −13 atoms/atom with 90% C.L. Both the limits are comparable with those obtained in recent experiments which instead look for spontaneous fission of superheavy elements or use the accelerator mass spectrometry.

show abstract

History of heavy r-process elements in galactic cosmic rays from nuclei tracks in meteorite olivine

Alexandrov

Babaev

Bagulya

et al. 2022

Advances in Space Research

View full text Add to dashboard Cite

Search for superheavy elements in galactic cosmic rays

Cited by 24 publications

References 24 publications

Dependence of track etching kinetics on chemical reactivity around the ion path

Dependence of track etching kinetics on chemical reactivity around the ion path

Search for long-lived superheavy eka-tungsten with radiopure ZnWO₄crystal scintillator

History of heavy r-process elements in galactic cosmic rays from nuclei tracks in meteorite olivine

Contact Info

Product

Resources

About

Search for superheavy elements in galactic cosmic rays

Cited by 24 publications

References 24 publications

Dependence of track etching kinetics on chemical reactivity around the ion path

Dependence of track etching kinetics on chemical reactivity around the ion path

Search for long-lived superheavy eka-tungsten with radiopure ZnWO4crystal scintillator

History of heavy r-process elements in galactic cosmic rays from nuclei tracks in meteorite olivine

Contact Info

Product

Resources

About

Search for long-lived superheavy eka-tungsten with radiopure ZnWO₄crystal scintillator