Academic literature on the topic 'Annihilation e⁺ e⁻'

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Journal articles on the topic "Annihilation e⁺ e⁻"

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Chan, Man Ho, and Chak Man Lee. "An excess radio signal in the Abell 4038 cluster." Monthly Notices of the Royal Astronomical Society 500, no. 4 (November 25, 2020): 5583–88. http://dx.doi.org/10.1093/mnras/staa2895.

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ABSTRACT In the past decade, various instruments, such as the Large Area Telescope (LAT) on the Fermi Gamma Ray Space Telescope, the Alpha Magnetic Spectrometer (AMS) and the Dark Matter Particle Explorer(DAMPE), have been used to detect the signals of annihilating dark matter in our Galaxy. Although some excesses of gamma rays, antiprotons and electrons/positrons have been reported and are claimed to be dark matter signals, the uncertainties of the contributions of Galactic pulsars are still too large to confirm the claims. In this paper, we report on a possible radio signal of annihilating dark matter manifested in the archival radio continuum spectral data of the Abell 4038 cluster. By assuming a thermal annihilation cross-section and comparing the dark matter annihilation model with the null hypothesis (cosmic ray emission without dark matter annihilation), we obtain very large test statistic (TS) values, TS > 45, for four popular annihilation channels, which correspond to more than 6σ statistical preference. This reveals a possible potential signal of annihilating dark matter. In particular, our results are also consistent with the recent claims of dark matter mass, m ≈ 30–50 GeV, annihilating via the $\rm b\bar{b}$ quark channel with the thermal annihilation cross-section. However, at this time, we cannot exclude the possibility that a better background cosmic ray model could explain the spectral data without recourse to dark matter annihilations.
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Chan, Man Ho, and Chak Man Lee. "A possible radio signal of annihilating dark matter in the Abell 4038 cluster." Monthly Notices of the Royal Astronomical Society: Letters 495, no. 1 (December 12, 2019): L124—L128. http://dx.doi.org/10.1093/mnrasl/slz185.

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ABSTRACT In the past decade, some telescopes [e.g. Fermi-Large Area Telescope (LAT), Alpha Magnetic Spectrometer(AMS), and Dark Matter Particle Explorer(DAMPE)] were launched to detect the signals of annihilating dark matter in our Galaxy. Although some excess of gamma-rays, antiprotons, and electrons/positrons have been reported and claimed as dark matter signals, the uncertainties of Galactic pulsars’ contributions are still too large to confirm the claims. In this Letter, we report a possible radio signal of annihilating dark matter manifested in the archival radio continuum spectral data of the Abell 4038 cluster. By assuming the thermal annihilation cross-section and comparing the dark matter annihilation model with the null hypothesis (cosmic ray emission without dark matter annihilation), we get very large test statistic values >45 for four popular annihilation channels, which correspond to more than 6.5σ statistical preference. This provides a very strong evidence for the existence of annihilating dark matter. In particular, our results also support the recent claims of dark matter mass m ≈ 30–50 GeV annihilating via the bb̄ quark channel with the thermal annihilation cross-section.
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Belotsky, K., M. Khlopov, and A. Kirillov. "Gamma-Ray Effects of Dark Forces in Dark Matter Clumps." Advances in High Energy Physics 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/651247.

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Existence of new gauge U(1) symmetry possessed by dark matter (DM) particles implies the existence of a new Coulomb-like interaction, which leads to Sommerfeld-Gamow-Sakharov enhancement of dark matter annihilation at low relative velocities. We discuss a possibility to put constraints on such dark forces of dark matter from the observational data on the gamma radiation in our Galaxy. Gamma-rays are supposed to originate from annihilation of DM particles in the small scale clumps, in which annihilation rate is supposed to be enhanced, besides higher density, due to smaller relative velocitiesvof DM particles. For possible cross sections, mass of annihilating particles, masses of clumps, and the contribution of annihilating particles in the total DM density we constrain the strength of new dark long range forces from comparison of predicted gamma-ray signal with Fermi/LAT data on unidentified point-like gamma-ray sources (PGS) as well as on diffuseγ-radiation. Both data on diffuse radiation and data on PGS put lower constraints on annihilation cross section at any dark interaction constant, where diffuse radiation provides stronger constraint at smaller clump mass. Density of annihilating DM particles is conventionally supposed to be defined by the frozen annihilation processes in early Universe.
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Gertsen, Anders S., Mads Koerstz, and Kurt V. Mikkelsen. "Benchmarking triplet–triplet annihilation photon upconversion schemes." Physical Chemistry Chemical Physics 20, no. 17 (2018): 12182–92. http://dx.doi.org/10.1039/c8cp00588e.

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Gajos, Aleksander. "Sensitivity of Discrete Symmetry Tests in the Positronium System with the J-PET Detector." Symmetry 12, no. 8 (August 1, 2020): 1268. http://dx.doi.org/10.3390/sym12081268.

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Study of certain angular correlations in the three-photon annihilations of the triplet state of positronium, the electron–positron bound state, may be used as a probe of potential CP and CPT-violating effects in the leptonic sector. We present the perspectives of CP and CPT tests using this process recorded with a novel detection system for photons in the positron annihilation energy range, the Jagiellonian Positron Emission Tomography (J-PET). We demonstrate the capability of this system to register three-photon annihilations with an unprecedented range of kinematical configurations and to measure the CPT-odd correlation between positronium spin and annihilation plane orientation with a precision improved by at least an order of magnitude with respect to present results. We also discuss the means to control and reduce detector asymmetries in order to allow J-PET to set the first measurement of the correlation between positronium spin and momentum of the most energetic annihilation photon which has never been studied to date.
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Lingenfelter, Richard E., and Reuven Ramaty. "Annihilation Radiation and Gamma-Ray Continuum from the Galactic Center Region." Symposium - International Astronomical Union 136 (1989): 587–605. http://dx.doi.org/10.1017/s0074180900187091.

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Observations of the time-dependent, electron-positron annihilation line radiation and gamma-ray continuum emission from the region of the Galactic Center show that there are two components to the annihilation line emission: a variable, compact source at or near the Galactic Center, and a steady, diffuse interstellar distribution. We suggest that the annihilating positrons in the compact source, observed from 1977 through 1979, result from photon-photon pair production, most likely around an accreting black hole, and that the annihilating, interstellar positrons result from the decay of radionuclei produced by thermonuclear burning in supernovae.
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Chajda, Ivan, and Helmut Länger. "Commutative rings whose ideal lattices are complemented." Asian-European Journal of Mathematics 12, no. 03 (May 27, 2019): 1950039. http://dx.doi.org/10.1142/s1793557119500396.

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We characterize those commutative rings [Formula: see text] whose ideal lattice [Formula: see text] endowed with the annihilation operation is an ortholattice. Moreover, we provide an analogous characterization for the annihilator lattice [Formula: see text] endowed with the annihilation operation. Since the ideal lattice of [Formula: see text] is modular, [Formula: see text] is already an orthomodular lattice provided it is an ortholattice. However, there exist also commutative rings whose ideal lattices are complemented but the complementation differs from annihilation. We present an example of such a ring and develop a procedure producing infinitely many rings with this property. Finally, we provide a sufficient condition for double annihilation to be a homomorphism from [Formula: see text] onto [Formula: see text].
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Durandin, Nikita A., Jussi Isokuortti, Alexander Efimov, Elina Vuorimaa-Laukkanen, Nikolai V. Tkachenko, and Timo Laaksonen. "Efficient photon upconversion at remarkably low annihilator concentrations in a liquid polymer matrix: when less is more." Chemical Communications 54, no. 99 (2018): 14029–32. http://dx.doi.org/10.1039/c8cc07592a.

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Stewart, A. T., C. V. Briscoe, and J. J. Steinbacher. "Positron annihilation in simple condensed gases." Canadian Journal of Physics 68, no. 12 (December 1, 1990): 1362–76. http://dx.doi.org/10.1139/p90-196.

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The angular-correlation technique of positron annihilation has been used to detect and measure the localized bubble state of positronium (Ps) in liquid Ne, Ar, Kr, H2, and N2 and in liquid and solid He at various pressures and temperatures. No bubble state was seen in liquid O2 or in solid Ne and Ar. The dynamics of bubble formation is not yet understood. In the cases where theoretical calculations, and adequate data, exist, viz. He, Ar, and H2, there is reasonable agreement for the momentum of the photons from the annihilation of positrons with the outer electrons of these atoms. The Ps annihilations from the self-trapped bubble state are reasonably well described in terms of a simple finite potential-well model.
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Chen, Shuoran, Fuming Chen, Pengju Han, Changqing Ye, Suqin Huang, Lei Xu, Xiaomei Wang, and Yanlin Song. "A stimuli responsive triplet–triplet annihilation upconversion system and its application as a ratiometric sensor for Fe3+ ions." RSC Advances 9, no. 62 (2019): 36410–15. http://dx.doi.org/10.1039/c9ra06524e.

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Dissertations / Theses on the topic "Annihilation e⁺ e⁻"

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Rosquist, Rasmus. "Annihilating the Cartesian Divide : Finding the Inhuman in Jeff VanderMeer's Annihilation." Thesis, Stockholms universitet, Engelska institutionen, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-169642.

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As posthumanist discourse attempts reposition the human as one of many subjects in relation to ecologies and other inhuman agencies, doing away with a Cartesian human exceptionalism is one of the key problems. From Haraway’s naturecultures, positing human culture as one of many, to Colebrook’s discussions of inhuman agencies, what ‘the human’ means to us is the heart of this theoretical field. In this paper I engage with theories within the discourse and posit them against a dialogue with Annihilation by Jeff Vandermeer, as well as with the ideas of George Bataille on how the human separated herself from other animals and in doing so created what we call Humanity. The aim is to find inhuman agencies and bring to light how they act upon the human, but also how perceiving the inhuman is, as Bataille writes, closed to us. What we find through a process and concept of annihilation of Humanity with the human, brought forth from a reading of the Biologist’s relation to the lighthouse and the tower in the novel, is that even though we may be able to perceive the inhuman, we might be always already anthropocentric in this perception. I suggest a reversal of Haraway’s term; culturenatures, as a way to understand this anthropocentric perception, in that just as our culture is borne from nature, other naturecultures are closed to us.
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Anderson, Craig. "Magnetic annihilation and reconnection." Thesis, University of St Andrews, 1994. http://hdl.handle.net/10023/14014.

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This thesis presents several analytical models of magnetic annihilation and reconnection and studies their properties. The models investigated are 1. Steady-state magnetic annihilation. The assumption of straight field lines reduces the resistive, viscous MHD equations to two ordinary differential equations, one for the flow and one for the magnetic field. These equations can be solved exactly (for the case of a simple stagnation-point flow) and asymptotically (for a more general stagnation-point flow). In both cases the reconnection rates can be fast due to advection effects which create large magnetic gradients. 2. Time-dependent magnetic annihilation. The assumption of straight field lines whose strength can vary with time reduces the MHD equations to two partial differential equations, one for the flow and one for the magnetic field. The time-modulated simple stagnation-point flow is shown to be an exact solution and the equation for the magnetic field is then solved on infinite and finite intervals. For the infinite interval the reconnection rates are shown to be dependent on the nature of the advected initial field. Also examined are self-similar solutions and the effect of variation of diffusivity with time. 3. Annihilation in a compressible, inviscid plasma. Here, the assumption of straight field lines and an inviscid, compressible flow reduce the MHD equations to a pair of non-linear coupled partial differential equations. Further assuming that the density only varies in one direction and the flow is of a stagnation-point type allow these equations to be solved approximately analytically and exactly numerically. It is shown that the magnetic field and reconnection rates are the same in both the compressible and incompressible cases and that the density of the plasma is greatest within the current sheet. 4. Steady-state magnetic reconnection. For an incompressible flow the MHD equations can be reduced to two coupled non-linear partial differential equations. These two equations are studied by seeking asymptotic solutions around the annihilation solution and then looking for series solutions to the first-order equations. It is found that the magnetic field always has a magnetic cusp and never possesses an x-type neutral point. 5. Reconnection in a viscous plasma. Assuming that the viscous forces dominate, the induction equation and equation of motion decouple and become linear. The magnetic field is obtained for the case of a simple stagnation-point flow. It is shown that if the inflow magnetic field is taken to be straight then the magnetic field within the region tends towards the annihilation solution as the magnetic Reynolds number increases. 6. Magnetic flipping. A previous ideal model of magnetic flipping is refined so that it becomes an exact solution of the MHD equations. In the refined model the streamlines are straight rather than curved. Assuming straight streamlines, the MHD equations reduce to two linear ordinary differential equations, one for the flow and one for the magnetic field. These are then solved exactly analytically to find a flow containing a viscous boundary layer and a magnetic field that contains an x-type neutral point. The angle between the separatrices of the field is determined by the Reynolds and magnetic Reynolds numbers. It is shown that most of the ohmic heating occurs within the viscous boundary layer.
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Green, D. G. "Positron annihilation on core electrons." Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557607.

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Diagrammatic many-body theory (MBT) is used to calculate the -y-spectra and an- nihilation rates for positrons annihilating on the core electrons of many-electron atoms. Long-range positron-atom and short-range positron-electron correlations are accounted for through the evaluation of the positron Dyson orbital and the true many-body annihilation vertex, which includes the exact electron-positron ladder series. The numerical implementation of the theory proceeds through the employment of a B-spline basis. It is tested through a comprehensive study of positron annihilation in the hydrogen-like ions He ", Li2+, BH and F8+, the ionization energies of which span those typical of the core electrons of many-electron atoms. The scattering phase shifts and normalized annihilation rate parameters Zeff are found to be in excellent agreement with existing sophisticated variational calculations, and -y-spectra are also predicted. , The annihilation ')'-spectra and partial annihilation rates are then calculated for ther- malized positrons annihilating on the core and valence electrons of the noble gas atoms Ar, Kr and Xe. Although stronger for the valence shells, the short-range correlations are found to significantly enhance the -y-spectra of the core subshells. For Ar, Kr and Xe, the core contributions to Zeff are found to be 0,55%, 1.5% and 2.2% respectively, their small values reflecting the difficulty for the positron to probe distances close to the nucleus. However, the core subshells have a broad momentum distribution and they markedly contribute to, and even dominate, the -y-spectra at Doppler energy shifts .2::. 3 ke V. It is found that proper inclusion of the core spectra is crucial in bringing the theoretical spectra into agreement with the experiment across the full range of Doppler energy shifts. State-dependent vertex enhancement factors 1nl, which quantify the effects of the short- range correlations, are estimated analytically and calculated using the MBT. They are found to follow a simple and physically motivated scaling with the subshell ionization energy Inz: 1nl = 1 + AI.;r;:z + sr], where A, Band (3 are positive constants. These factors can be incorporated in simple independent-particle-model calculations to reconstruct the true annihilation -y-spectra for annihilation on core electrons of atoms across the periodic table, and on the localized atomic-like core electrons of condensed matter systems. In the last part of the work, the atomic MBT is used to address the important problem of calculating the annihilation -y-spectra of molecues, with focus on the role of the positron- nuclear repulsion and correlation effects.
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Brown, A. P. "Positron annihilation at metal surfaces." Thesis, University of East Anglia, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381743.

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Johansson, Petter. "Pair Annihilation in a Laser Pulse." Thesis, Umeå universitet, Institutionen för fysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-46816.

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The thesis analyses the process of pair annihilation into one photon in a laser pulse. The theory of how to include pulse shapes in Strong Field QED and the resulting cross section is presented. The cross section is calculated and estimated for lasers of ELI and XFEL facilites. It is found that the effect may be experimentally verifiable at high frequency XFEL facilities for very finely tuned particle kinematics, but negligible at high intensity optical laser facilities such as ELI.
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Massaro, Daniele. "Loop-induced annihilation of dark matter." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19428/.

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Plenty of evidences suggest the existence of a new type of non-luminous matter in the Universe, that has been called dark matter. Its nature is still unresolved, however, there is a widespread belief that is a new particle. Today we have three important search strategies for dark matter: indirect detection, direct detection and collider searches. In this thesis we focus on indirect detection, which investigates the products of annihilation of dark matter in overdense regions of the Universe. In particular we focus on gamma-ray observations, considering the gamma-ray line signal, arising from dark matter annihilation into a pair of monochromatic photons. For electrically neutral dark matter, this process can proceed only via loop diagrams. Its computation can be done using numerical techniques. Numerical tools are a huge step forward in the dark matter research, and help scientists to make predictions and improve their models. However, at the current status there is no tool allowing for the calculation of loop-induced gamma-ray signals for arbitrary models. In this thesis we make an important step towards filling this gap. We focus on the numerical tool MadDM, and we validate the feature of automatised loop-induced computation using two dark matter models: the singlet scalar Higgs portal model and a simplified top-philic model. We then constrain the parameter space of these models using the current experimental results. In particular we consider the upper limits on gamma-ray line searches obtained by Fermi-LAT and HESS collaborations, finding that they provide important constraints on the parameters of both models.
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Tassi, Emanuele. "Exact solutions for magnetic reconnective annihilation." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971963975.

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Schmitz, Heiko. "Computersimulation von Positronium-Annihilation in Polymeren." [S.l. : s.n.], 1999. http://ArchiMeD.uni-mainz.de/pub/2000/0012/diss.pdf.

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Steinbacher, John James. "Positron annihilation in simple condensed gases." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0001/NQ35980.pdf.

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Iwata, Koji. "Positron annihilation on atoms and molecules /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 1997. http://wwwlib.umi.com/cr/ucsd/fullcit?p9811796.

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Books on the topic "Annihilation e⁺ e⁻"

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Szewc, Piotr. Annihilation. Normal, Ill: Dalkey Archive Press, 1999.

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Athans, Philip. Annihilation. New York: Wizards of the Coast Publishing, 2010.

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Giffen, Keith. Annihilation. New York: Marvel, 2007.

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Annihilation. Renton, WA: Wizards of the Coast, 2004.

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Preisler, Jerome. Annihilation. New York: Tom Dohery Assocatiates Books, 1997.

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Giffen, Keith. Annihilation. New York: Marvel, 2007.

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Karpyshyn, Drew. Annihilation: Star Wars. New York: Del Rey/Ballantine Books, 2012.

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N, Gage Christos, Moore Stuart, Chung June, Kolins Scott, McKone Mike, DiVito Andrea, Villari Laura, and Mounts Paul, eds. Annihilation. New York: Marvel, 2007.

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Nuclear annihilation. New York: Rosen Central, 2010.

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Szewc, Piotr. Annihilation: A novel. Normal, Ill: Dalkey Archive Press, 1993.

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Book chapters on the topic "Annihilation e⁺ e⁻"

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Close, Frank. "Annihilation." In Antimaterie, 83–103. Heidelberg: Spektrum Akademischer Verlag, 2010. http://dx.doi.org/10.1007/978-3-8274-2532-4_5.

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Chiari, Luca, and Masanori Fujinami. "Positron Annihilation." In Handbook of Advanced Nondestructive Evaluation, 1301–45. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-26553-7_19.

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Triftshäuser, W. "Positron Annihilation." In Topics in Current Physics, 249–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-46571-0_9.

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Chiari, Luca, and Masanori Fujinami. "Positron Annihilation." In Handbook of Advanced Non-Destructive Evaluation, 1–46. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-30050-4_19-1.

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Mohaghegh, Jason Bahbak. "First Annihilation." In New Literature and Philosophy of the Middle East, 37–90. New York: Palgrave Macmillan US, 2010. http://dx.doi.org/10.1057/9780230114418_2.

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Mohaghegh, Jason Bahbak. "Second Annihilation." In New Literature and Philosophy of the Middle East, 91–142. New York: Palgrave Macmillan US, 2010. http://dx.doi.org/10.1057/9780230114418_3.

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Cugnon, J. "Antiproton-Nucleus Annihilation." In Springer Proceedings in Physics, 211–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73473-1_26.

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Liehr, Andreas W. "Generation and Annihilation." In Springer Series in Synergetics, 175–205. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31251-9_7.

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Süvegh, K., and T. Marek. "Positron Annihilation Spectroscopies." In Handbook of Nuclear Chemistry, 1461–84. Boston, MA: Springer US, 2011. http://dx.doi.org/10.1007/978-1-4419-0720-2_27.

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Koller, Stephan. "‘War of Annihilation’." In Internationale Kommunikation, 241–62. Wiesbaden: VS Verlag für Sozialwissenschaften, 1996. http://dx.doi.org/10.1007/978-3-322-90658-8_14.

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Conference papers on the topic "Annihilation e⁺ e⁻"

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Playfer, S. M. "N̄N annihilation experiments." In AIP Conference Proceedings Volume 150. AIP, 1986. http://dx.doi.org/10.1063/1.36161.

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Protasov, K. "Antiproton annihilation on nuclei." In HADRON SPECTROSCOPY: Ninth International Conference on Hadron Spectroscopy. AIP, 2002. http://dx.doi.org/10.1063/1.1482538.

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Matsumoto, Shigeki. "Explosive dark matter annihilation." In International Workshop on Astroparticle and High Energy Physics. Trieste, Italy: Sissa Medialab, 2003. http://dx.doi.org/10.22323/1.010.0044.

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Dover, Carl B. "Nucleon‐antinucleon annihilation dynamics*." In 3rd Conference on the Intersections Between Particle and Nuclear Physics. American Institute of Physics, 1988. http://dx.doi.org/10.1063/1.37738.

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Cugnon, J. "Antiproton annihilation on nuclei." In 3rd Conference on the Intersections Between Particle and Nuclear Physics. American Institute of Physics, 1988. http://dx.doi.org/10.1063/1.37739.

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Ramaty, R., and R. E. Lingenfelter. "Galactic positron annihilation radiation." In AIP Conference Proceedings Volume 155. AIP, 1987. http://dx.doi.org/10.1063/1.36436.

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von Ruhlnd, Christopher. "The annihilation of structure." In European Microscopy Congress 2020. Royal Microscopical Society, 2021. http://dx.doi.org/10.22443/rms.emc2020.786.

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Dover, Carl B. "Exotic mesons in N̄N annihilation." In GLUEBALLS, HYBRIDS, AND EXOTIC HADRONS. AIP, 1989. http://dx.doi.org/10.1063/1.38142.

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Vampel, M., C. O. Weiss, J. T. Malos, and N. R. Heckenberg. "Vortex Creation/Annihilation in Lasers." In EQEC'96. 1996 European Quantum Electronic Conference. IEEE, 1996. http://dx.doi.org/10.1109/eqec.1996.561741.

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Diehl, Roland. "Gamma-Rays from Positron Annihilation." In 7th INTEGRAL Workshop. Trieste, Italy: Sissa Medialab, 2009. http://dx.doi.org/10.22323/1.067.0001.

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Reports on the topic "Annihilation e⁺ e⁻"

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Morgan, David L., and Jr. Antiproton-Hydrogen Atom Annihilation. Fort Belvoir, VA: Defense Technical Information Center, May 1986. http://dx.doi.org/10.21236/ada168262.

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Mills, Jr, and Allen P. Positronium Annihilation Gamma Ray Laser. Fort Belvoir, VA: Defense Technical Information Center, July 2009. http://dx.doi.org/10.21236/ada506546.

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Musakhanov, M. M., and I. V. Musatov. Nucleon-antinucleon annihilation in chiral soliton model. Office of Scientific and Technical Information (OSTI), September 1991. http://dx.doi.org/10.2172/10108438.

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Colmenares, C., R. H. Howell, D. Ancheta, T. Cowan, J. Hanafee, and P. Sterne. First positron annihilation lifetime measurement of Pu. Office of Scientific and Technical Information (OSTI), November 1996. http://dx.doi.org/10.2172/491854.

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Kaye, H. Stephen. Quark Flavor Identification In Electron-Positron Annihilation. Office of Scientific and Technical Information (OSTI), June 2018. http://dx.doi.org/10.2172/1453991.

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Chen, y. Computer Simulation of Electron Positron Annihilation Processes. Office of Scientific and Technical Information (OSTI), October 2003. http://dx.doi.org/10.2172/826474.

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Ibe, M. Breit-Wigner Enhancement of Dark Matter Annihilation. Office of Scientific and Technical Information (OSTI), June 2009. http://dx.doi.org/10.2172/957441.

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Naslund, Robert A., and Phillip L. Jones. Positron Annihilation Studies of Thermoplastic LCP Composites,. Fort Belvoir, VA: Defense Technical Information Center, August 1995. http://dx.doi.org/10.21236/ada299436.

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Musakhanov, M. M., and I. V. Musatov. Nucleon-antinucleon annihilation in chiral soliton model. Office of Scientific and Technical Information (OSTI), September 1991. http://dx.doi.org/10.2172/6095538.

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Linden, Timothy Ryan. Dark Matter Annihilation at the Galactic Center. Office of Scientific and Technical Information (OSTI), June 2013. http://dx.doi.org/10.2172/1155847.

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