(L+M+. . .)/K capture ratio in the decay of<sup>138</sup>La

Mandal, A.; Patro, A.P.

doi:10.1088/0305-4616/10/12/015

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…(28), the last term on the right-hand side of Eq. (26), that is, the nonperturbative term, can be rewritten as ie EðtÞ Á @hq k;1s ðtÞi=@k. To proceed further, we make the transformation ft; kg ! ft;kg according tot5t; k5k1 e h ðt 0 dt 0 Eðt 0 Þ k1 gðtÞ.…”

Section: Multiphoton Ionizationmentioning

confidence: 99%

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Density‐matrix theory of quantum dynamics under a strong external field switched on nonadiabatically

Kitamura

2014

Int J of Quantum Chemistry

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Quantum time‐evolution equations for the density matrix are formulated in the unrestricted Hartree–Fock approximation, with an emphasis on the nonperturbative effect due to a sudden or gradual onset of a strong external field. Numerical simulations are performed for ideal Fermi gas around a square‐well potential which is switched on dynamically. When the switching is fast enough, an oscillatory motion of the particle is induced by a nonadiabatic transition at the Landau–Zener crossing point, which is most clearly seen in a small‐size system. When the switching is sufficiently slow, the simulation corroborates the adiabatic theorem. It is shown that the Anderson's infrared catastrophe in a metal is strongly enhanced by the nonperturbative effect. The Keldysh formula of atomic multiphoton ionization can also be derived from the nonperturbative term in the density‐matrix equation, indicating a wide applicability of the present theory. © 2014 Wiley Periodicals, Inc.

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Section: Multiphoton Ionizationmentioning

confidence: 99%

“…Here, the first and the second terms inside the curly brackets represent the adiabatic and nonadiabatic components, respec-tively, of the second-order energy: These two terms were derived recently by Mandal and Hunt [26] in a more general form.…”

Section: Appendix: Perturbation Theorymentioning

confidence: 99%

Density‐matrix theory of quantum dynamics under a strong external field switched on nonadiabatically

Kitamura

2014

Int J of Quantum Chemistry

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“…It was not until 2010 that Mandal et al demonstrated a non-zero ME voltage at H Bias ¼ 0 Oe in a graded ferrite/PZT laminate that had flexural deformations, where internal magnetic fields were induced by compositional gradients. [12] Subsequent research focused only on material replacements for the two magnetostrictive layers under H Bias ¼ 0 Oe. Efforts were also focused on the study of the relationship between materials and dimensions, in order to reduce H Bias .…”

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confidence: 99%

A Highly Efficient Self‐Biased Nickel‐Zinc Ferrite/Metglas/PZT Magnetoelectric Gyrator

Leung

Sreenivasulu

Zhuang

et al. 2018

Physica Rapid Research Ltrs

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A high efficiency self‐biased magnetoelectric (ME) gyrator operating under zero magnetic bias field (HBias = 0) was developed. It consists of a three‐phase nickel‐zinc ferrite/Metglas/piezoelectric longitudinal–transverse (L‐T) ME laminate and a solenoid. Laminates with different length–width (L/W) ratios, together with various thickness (number of Metglas foils) ratios between ferrite and Metglas layers, were studied. A maximum power conversion efficiency (η) of 72% was found at the fundamental electromechanical resonance for a high L/W ratio of 18.7. The high zero‐bias η could be attributed to a higher mechanical quality factor (Qm) and the low demagnetization effect (Nz) of nickel‐zinc ferrite laminates of higher L/W. Eliminating the external magnetic bias will facilitate miniaturization of ME gyrators for use in portable electronics and medical applications.

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“…The isotopes having higher forbidden transitions usually have a very long halflife and therefore it is very difficult to produce the required activity. Recently Mandal and Patro (1984) measured the ( L + M + . .…”

Section: Introductionmentioning

confidence: 99%

Study of K-capture probability in the decay of²⁰⁹Po

Mandal

Saha

Sahakundu

et al. 1989

J. Phys. G: Nucl. Part. Phys.

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The alpha and weak EC decay of 209Po have been studied. The K-capture probability and (L+M+. . .)/K capture ratio for the second forbidden unique EC transition of 209Po to the 896.6 keV level of 209Bi have been measured from the K X-ray and 896.6 keV gamma -ray intensities. The value thus obtained is compared with the theoretical estimates using the theory of Behrens and Buhring (1971). The result indicates a significant contribution of capture for higher shells.

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(L+M+. . .)/K capture ratio in the decay of¹³⁸La

Cited by 6 publications

References 11 publications

Density‐matrix theory of quantum dynamics under a strong external field switched on nonadiabatically

Density‐matrix theory of quantum dynamics under a strong external field switched on nonadiabatically

A Highly Efficient Self‐Biased Nickel‐Zinc Ferrite/Metglas/PZT Magnetoelectric Gyrator

Study of K-capture probability in the decay of²⁰⁹Po

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(L+M+. . .)/K capture ratio in the decay of138La

Cited by 6 publications

References 11 publications

Density‐matrix theory of quantum dynamics under a strong external field switched on nonadiabatically

Density‐matrix theory of quantum dynamics under a strong external field switched on nonadiabatically

A Highly Efficient Self‐Biased Nickel‐Zinc Ferrite/Metglas/PZT Magnetoelectric Gyrator

Study of K-capture probability in the decay of209Po

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(L+M+. . .)/K capture ratio in the decay of¹³⁸La

Study of K-capture probability in the decay of²⁰⁹Po