Electron capture<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>β</mml:mi></mml:math>decay of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>7</mml:mn></mml:msup></mml:math>Be located inside and outside the C<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mn>36</mml:mn></mml:msub></mml:math>fullerene

Tkalya, E. V.; Авдеенков, А. В.; Bibikov, A. V.; Bodrenko, Igor; Николаев, А. В.

doi:10.1103/physrevc.86.014608

Cited by 10 publications

(4 citation statements)

References 34 publications

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“…Based on these experiments, Morisato et al used density functional theory to calculate and explain why 7 Be@C 60 shows higher EC decay rate than 7 Be metal found in the above experiments in detail, and found that there are inequivalent four stable Be sites inside C 60 and that center of C 60 is the most favorable site [59]. Recently, a similar analysis was published in 2012 [60]. Tkalya et al calculated EC β decay of 7 Be when 7 Be is encapsulated in C 36 cage in terms of ab initio post-Hartree-Fock method and demonstrated that the chemical environment did affect nucleus β decay properties.…”

Section: The Purcell Effect and The Neutron: Qualitative Featuresmentioning

confidence: 84%

“…The existing theoretical and experimental studies have found that the decay properties of nucleus can be changed by the external environment [57][58][59][60], which potentially imply that the cavity quantum electrodynamics effect will affect the n → p+e − + νe decay process in the bottletype experiment. The main question in the Purcell effect of neutron decay is how to observe the modification of the neutron lifetime measurement by the experimental apparatus.…”

Section: The Purcell Effect In Future and Ongoing Neutron Experiments...mentioning

confidence: 99%

“…It must be emphasized that GNR used here, from a phenomenological point of view, is physically equivalent to a trap bottle or cavity. On the other hand, as mentioned above, a series of experiments and theoretical calculations show that the chemical environment of the nucleus, i.e., its position, will affect its decay properties [57][58][59][60]. Therefore, one can regard the |n → |p transition frequency as being modulated by the GNR and rewrite it as…”

Section: The Purcell Effect In Future and Ongoing Neutron Experiments...mentioning

confidence: 99%

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Measurement of Neutron Lifetime and Purcell Effect

He,

Zhu

2021

Preprint

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Purcell effect predicts that spontaneous radiation is not an intrinsic property of matter, but is affected by the environment in which it is located, and is the result of the interaction of matter and field. Purcell effect can be inferred from Fermi's Gold rule through strict quantum electrodynamics (QED), and through it can achieve the enhancement or suppression of radiation. We suggest that, in principle, the Purcell effect can be detected at the percentage level of neutron decay in experiments with trapped ultra-cold neutrons. As a test of our claim, we propose a currently achievable experimental protocol that can detect whether Purcell effect has occurred in an trapped ultra-cold neutron lifetime measurement experiment. Finally, we discuss the discrepancy in current methods of measuring neutron lifetime, which may be caused by different experimental setups.

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Section: The Purcell Effect and The Neutron: Qualitative Featuresmentioning

confidence: 84%

Section: The Purcell Effect In Future and Ongoing Neutron Experiments...mentioning

confidence: 99%

Section: The Purcell Effect In Future and Ongoing Neutron Experiments...mentioning

confidence: 99%

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Measurement of Neutron Lifetime and Purcell Effect

He,

Zhu

2021

Preprint

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“…As the decay rate depends on the electronic density at the nucleus, 7 Be has been used in the studies of the effect of the chemical environment onto the nuclear processes [22][23][24].…”

Section: Nuclides Propertiesmentioning

confidence: 99%

$^7$Be and $^{22}$Na radionuclides for a new therapy of cancer

Kukulin,

Bibikov,

Tkalya

et al. 2019

Preprint

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The 10 B isotope has been almost exclusively used in the neutron-capture radiation therapy (NCT) of cancer for decades. We have identified two other nuclides suitable for the radiotherapy, which have ca.10 times larger cross section of absorption for neutrons and emit heavy charged particles. This would provide several key advantages for potential NCT, such as the possibility to use either a lower nuclide concentration in the target tissues, or a lower neutron irradiation flux.By detecting the characteristic γ radiation from the spontaneous decay of the radionuclides, one can image and control their accumulation. These advantages could be critical for the revival of the NCT as a safer, more efficient and more widely used cancer therapy.

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Promising Perspectives on the Use of Fullerenes as Efficient Containers for Beryllium Atoms

Bodrenko

Satta

Caddeo

et al. 2023

Adv Funct Materials

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The possibility of using fullerenes as containers for toxic beryllium atoms is studied by a multi‐scale approach in which first‐principles and classical molecular dynamics simulations are combined. By studying the energetics, electronic and spectroscopic properties of Be‐fullerene systems and by simulating their interaction at finite temperature in vacuo and in representative biological environments it is concluded that: i) Be endohedral complexes can be obtained by implanting Be atoms at energies >2.3 eV that is consistent with laser implantation technologies; ii) it is in principle possible to distinguish stable endohedral complexes from metastable exohedral ones by optical absorption, suggesting that optical spectroscopy can be a valuable a non‐destructive technique to assist the synthesis and the control of implanted films iii) the Be‐endohedral complexes are long‐lived and thermodynamically stable and can confine beryllium both in vacuo and in aqueous solution; iv) Be@C60 complexes are likely unable to penetrate the selectivity filters of a prototypical protein showing that fullerene prevents undesired interactions with biomolecules and toxicity effects of Be2+ related to replacement of the Ca2+. Overall, these results provide an assessment on the possibility to encapsulate Be atoms into fullerenes by ion implantation to synthesize inert and highly stable and safe molecular containers for toxic beryllium radionuclides. Great opportunities are expected for the realization and application of Be‐C60 complexes to nanotechnology and nanomedicine with particularly appealing perspectives in the field of neutron capture therapy of cancer.

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Electron captureβdecay of7Be located inside and outside the C36fullerene

Cited by 10 publications

References 34 publications

Measurement of Neutron Lifetime and Purcell Effect

Measurement of Neutron Lifetime and Purcell Effect

$^7$Be and $^{22}$Na radionuclides for a new therapy of cancer

Promising Perspectives on the Use of Fullerenes as Efficient Containers for Beryllium Atoms

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