Polarization analysability of p +12C and p +28Si elastic scattering below 4 MeV

Kozma, P.; Bém, P.

doi:10.1007/bf01590415

Cited by 9 publications

(3 citation statements)

References 10 publications

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“…[ with the assumption that only the leading coefficient b,$(2) from expansion (Eq. (6)) contributes (see [48]). The data were transformed to O,, = 9" if needed.…”

Section: Interaction Radiusmentioning

confidence: 99%

Complete determination of the transition amplitudes from a comprehensive data analysis of the fusion reactions D(d,p)³H and D(d,n)³He for E_d<500 keV

Lemaı̂tre

Schieck

1993

Annalen der Physik

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All relevant low-energy transition amplitudes for the D(d,n)'He and D(4p)'H reactions were determined from a fit to Legendre expansion coefficients of the available experimental data. A simple barrier penetrability model was used. Quintet S-wave transitions are found to contribute strongly thus obliterating the idea of neutron-lean "polarized" fusion energy production. The D + D interaction radius was determined with good accuracy for both reactions individudly. The astrophysical S functions show a small S-wave enhancement and Fwave suppression of the D (~f , p )~I f branch. Apart from possible applications the investigation of the D+D reactionswhich have received special interest from the beginning of nuclear reaction studiesis of interest in itself: the four-nucleon system is the lightest one exhibiting excited states. With the advent of faster computers and with the successes of rigorous theoretical calculations in the three-nucleon system e.g. 111 using modern meson-exchange potentials [2, 3, 4, 51 there is hope for realistic microscopic calculations (such as those based on Faddeev theory) also for this system, see e.g. [6]. The observed differences for the two branches of this system with identical particles in the entrance channel lend themselves to studies of the role of Coulomb interaction in the exit channel and possible charge-symmetry breaking effects. Comprehensive surveys of the four-nucleon system have been published recently [7, 81.On the other hand these fusion reactions play a role in nuclear astrophysics and furthermore they accompany the main reactions in planned light-particle fusion reactors. The economically advantageous concept of "neutron-lean" fusion energy production by using the 3He(d,p)4He reaction would only be realizable if the accompanying neutrons from the D(d,n)3He reaction could be suppressed. For this purpose the use of polarized "fuel" has been suggested where the neutron production via the entrancechannel spin-quintet states was assumed to be strongly suppressed [9, 101. This concept has been contradicted by some authors [11, 121 and will also be studied in this work.

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“…[ with the assumption that only the leading coefficient b,$(2) from expansion (Eq. (6)) contributes (see [48]). The data were transformed to O,, = 9" if needed.…”

Section: Interaction Radiusmentioning

confidence: 99%

Complete determination of the transition amplitudes from a comprehensive data analysis of the fusion reactions D(d,p)³H and D(d,n)³He for E_d<500 keV

Lemaı̂tre

Schieck

1993

Annalen der Physik

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“…Lead tungstate (PbWO 4 ) is a popular scintillating material for use in the new generation of high-energy physics because of its relatively high density, fast scintillation decay constant, and resistance to radiation damage. These properties are particularly important for the new designed PbWO 4 instruments used in the Large Hadron Collider (at CERN) since the new accelerator generates high energy particles at high beam luminosity [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. At room temperature, lead tungstate presents scheelite-type tetragonal structure, belonging to I4 1 /a space group [16,17].…”

Section: Introductionmentioning

confidence: 99%

Electrical and optical properties of new Pr³⁺-doped PbWO₄ ceramics

Groń

Piątkowska

Tomaszewicz

et al. 2018

Materials Science-Poland

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Polycrystalline samples of new scheelite-type tungstates, Pb 1 − 3x x Pr 2x WO 4 with 0.0098 x 0.20, where denotes cationic vacancies have been successfully prepared by a high-temperature solid-state reaction method using Pr 2 (WO 4 ) 3 and PbWO 4 as the starting reactants. The influence of the Pr 3+ substitution in the scheelite framework on the structure and optical properties of prepared new ceramic materials has been examined using powder X-ray diffraction method (XRD) and UV-Vis-NIR spectroscopy. The results of dielectric studies of Pb 1 − 3x x Pr 2x WO 4 samples showed both low values of dielectric constant (below 14) and loss tangent (below 0.2). The electrical conductivity and thermoelectric power measurements revealed a low conductivity (∼2 × 10 −9 S/m) and the sign change of thermoelectric power around the temperature of 366 K suggesting the p-n transition. These results are discussed in the context of vacancy, acceptor and donor levels as well as the Maxwell-Wagner model.

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“…[1][2][3] For example, bismuth germanate Bi 4 Ge 3 O 12 (BGO) crystal is a famous scintillator and widely used in nuclear medicine, 4 highenergy physics, 5 medical imaging (XCT, PET), 6 geological prospecting and other industries. 7 Bismuth silicate Bi 4 Si 3 O 12 (BSO) crystal has a high density of 6.80 g/cm 3 , a short radiation length of X 0 = 1 15 cm, a light yield as large as 20% of BGO, a faster decay time of 100 ns, a high hardness of 5 Mohs, absence of hygroscopicity and cleavage.…”

Section: Introductionmentioning

confidence: 99%

Development of Doped Bi4Si3O12 Crystals for Scintillation, Laser and LED Applications

Jia-Yue¹,

Bobo²,

Zhang³

2015

mater focus

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Bismuth silicate Bi 4 Si 3 O 12 (BSO) crystal is a fast scintillator which has potential applications in high energy physics, nuclear physics, computed tomography and dosimetry. Compared with widely used Bi 4 Ge 3 O 12 (BGO) crystal, BSO has some better scintillation properties such as a faster decay time, greater radiation hardness and a lower raw material cost, so it is considered to be the substitute for an alternative to BGO crystals. However, two main problems hindered its practical applications: (1) it is difficult to grow large size and high quality crystals due to its compositional segregation; (2) BSO has a relatively low light yield. Recently, large size BSO crystals have been grown by the modified vertical Bridgman method in Shanghai Institute of Technology. The scintillation properties of rare earth doped BSO crystals have been investigated and BSO crystal doped with small amount Dy 2 O 3 increases its light yield remarkably. Furthermore, some experimental results revealed the potential applications of Re-doped BSO crystals in laser and LED fields. In this review, the growth process, scintillation properties and luminescent mechanism of Re or Ge doped BSO crystals were introduced. The spectroscopic properties and energy transfer of Re-doped BSO crystals were discussed based on its applications in laser and LED. As a result, doped BSO crystal is a novel multi-functional material for scintillation, laser and LED applications.

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Polarization analysability of p +12C and p +28Si elastic scattering below 4 MeV

Cited by 9 publications

References 10 publications

Complete determination of the transition amplitudes from a comprehensive data analysis of the fusion reactions D(d,p)³H and D(d,n)³He for E_d<500 keV

Complete determination of the transition amplitudes from a comprehensive data analysis of the fusion reactions D(d,p)³H and D(d,n)³He for E_d<500 keV

Electrical and optical properties of new Pr³⁺-doped PbWO₄ ceramics

Development of Doped Bi<SUB>4</SUB>Si<SUB>3</SUB>O<SUB>12</SUB> Crystals for Scintillation, Laser and LED Applications

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Polarization analysability of p +12C and p +28Si elastic scattering below 4 MeV

Cited by 9 publications

References 10 publications

Complete determination of the transition amplitudes from a comprehensive data analysis of the fusion reactions D(d,p)3H and D(d,n)3He for Ed<500 keV

Complete determination of the transition amplitudes from a comprehensive data analysis of the fusion reactions D(d,p)3H and D(d,n)3He for Ed<500 keV

Electrical and optical properties of new Pr3+-doped PbWO4 ceramics

Development of Doped Bi<SUB>4</SUB>Si<SUB>3</SUB>O<SUB>12</SUB> Crystals for Scintillation, Laser and LED Applications

Contact Info

Product

Resources

About

Complete determination of the transition amplitudes from a comprehensive data analysis of the fusion reactions D(d,p)³H and D(d,n)³He for E_d<500 keV

Complete determination of the transition amplitudes from a comprehensive data analysis of the fusion reactions D(d,p)³H and D(d,n)³He for E_d<500 keV

Electrical and optical properties of new Pr³⁺-doped PbWO₄ ceramics