Search for 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math>
 decay of 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Te</mml:mi><mml:mprescripts /><mml:none /><mml:mn>104</mml:mn></mml:mmultiscripts></mml:math>
 with a novel recoil-decay scintillation detector

Xiao, Y.; Go, S.; Grzywacz, R.; Orlandi, R.; Andreyev, A. N.; Asai, Mitsuteru; Bentley, M. A.; Angelis, G. de; Gross, C. J.; Hausladen, Paul; Hirose, Kazuki; Hofmann, S.; Ikezoe, H.; Jenkins, D. G.; Kindler, B.; Léguillon, R.; Lommel, B.; Makii, H.; Mazzocchi, C.; Nishio, K.; Parkhurst, Philip; Paulauskas, S. V.; Petrache, C. M.; Rykaczewski, K. P.; Sato, Tatsuhiko; Smallcombe, J.; Toyoshima, Atsushi; Tsukada, K.; Vaigneur, Keith; Wadsworth, R.

doi:10.1103/physrevc.100.034315

Cited by 26 publications

(12 citation statements)

References 23 publications

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“…A combination of our formalism with an imaginary optical potential may also allow microscopic studies of these processes [85]. Extending the analysis to the up-right corner of the nuclide chart could be another working direction, where the medium-mass and heavy nuclei such as 104 Te and 212 Po are known to have rich cluster structures [86][87][88][89][90]. Recently, inspired by the non-localized cluster model, the quartetting wave function approach and the quartet model [91][92][93][94][95][96][97] are proposed to study α clustering in heavy nuclei such as 212 Po.…”

Section: Discussionmentioning

confidence: 99%

Resonant and scattering states in the α+α system from the nonlocalized cluster model

Bai

Ren

2020

Phys. Rev. C

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The non-localized cluster model provides a new perspective on nuclear cluster effects and has been applied successfully to study cluster structures in various bound states and quasi-bound states (i.e., long-lived resonant states). In this work, we extend the application scope of the non-localized cluster model further to resonant and scattering states. Following the R-matrix theory, the configuration space is divided into the interior and exterior regions by a large channel radius such that the nuclear forces and the antisymmetrization effects become negligible between clusters in the exterior region. In the interior region, the picture of non-localized clustering is realized mathematically by adopting the Brink-Tohsaki-Horiuchi-Schuck-Röpke (Brink-THSR) wave functions as the bases to construct the interior wave functions. The Bloch-Schrödinger equation is used to match the interior wave functions continuously with the asymptotic boundary conditions of the resonant and scattering states at the channel radius, which leads eventually to solutions of the problem. As a first test of the formalism, the low-lying resonant states of 8 Be and the phase shifts of the α + α elastic scattering are studied. The numerical results agree well with the experimental data, which shows the validity of the theoretical framework. *

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Section: Discussionmentioning

confidence: 99%

Resonant and scattering states in the α+α system from the nonlocalized cluster model

Bai

Ren

2020

Phys. Rev. C

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“…Later on, Xiao et al observe two new events compatible with Ref. [17] in an independent experiment and give the constraint T 1/2,α ( 104 Te) < 4 ns [18]. But, they cannot fully exclude the possible impacts from β decay.…”

Section: Numerical Resultsmentioning

confidence: 93%

“…The light orange region is the parameter space allowed by Ref. [18]. The light red region estimates the SMCM + DFχallowed parameter space from the condition Pα ≤ 1.…”

Section: Numerical Resultsmentioning

confidence: 99%

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$α$-cluster structures above double shell closures via double-folding potentials from chiral effective field theory

Bai,

Ren

2021

Preprint

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α-cluster structures above double shell closures are among the cornerstones for nuclear α-cluster physics. Semi-microscopic cluster models (SMCMs) are important theoretical models to study their properties. A crucial ingredient of SMCM is the effective potential between the alpha cluster and the doubly magic nucleus. We derive new double-folding potentials between α clusters and doubly magic nuclei from soft local chiral nucleon-nucleon potentials given by chiral effective field theory (χEFT) at the next-to-next-to-leading order. The α-cluster structures in 8 Be, 20 Ne, 44,52 Ti, and 212 Po are explored to validate these new double-folding potentials. The α decay of 104 Te is also studied in the light of recent experimental results. Our study shows that double-folding potentials from χEFT are the new reliable effective potentials for the SMCM approach to α-cluster structures above double shell closures, with both conceptual and phenomenological merits.

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“…It determines the lifetime of heavy and superheavy nuclei, and its empirical values have often been estimated from the α decay lifetime. For instance, the very short lifetime of 108 Xe and 104 Te were recently measured [6,7], and the enhancement of the α-particle preformation probability beyond proton-rich nucleus 100 Sn has been discussed [8][9][10].…”

mentioning

confidence: 99%

Unexpectedly enhanced $α$-particle preformation in $^{48}$Ti probed by the $(p,pα)$ reaction

Taniguchi,

Yoshida,

Chiba

et al. 2021

Preprint

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The formation of α particle on nuclear surface has been a fundamental problem since the early age of nuclear physics. It strongly affects the α decay lifetime of heavy and superheavy elements, level scheme of light nuclei, and the synthesis of the elements in stars. However, the α-particle formation in medium-mass nuclei has been poorly known despite its importance. Here, based on the 48 Ti(p, pα) 44 Ca reaction analysis, we report that the α-particle formation in a mediummass nucleus 48 Ti is much stronger than that expected from a mean-field approximation, and the estimated average distance between α particle and the residue is as large as 4.5 fm. This new result poses a challenge of describing four nucleon correlations by microscopic nuclear models.

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Search for α decay of Te104 with a novel recoil-decay scintillation detector

Cited by 26 publications

References 23 publications

Resonant and scattering states in the α+α system from the nonlocalized cluster model

Resonant and scattering states in the α+α system from the nonlocalized cluster model

$α$-cluster structures above double shell closures via double-folding potentials from chiral effective field theory

Unexpectedly enhanced $α$-particle preformation in $^{48}$Ti probed by the $(p,pα)$ reaction

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