Concept of a Staged FEL Enabled by Fast Synchrotron Radiation Cooling of Laser-Plasma Accelerated Beam by Solenoidal Magnetic Fields in Plasma Bubble

A novel method for generating GigaGauss solenoidal field in laser-plasma bubble, using screw-shaped laser pulses, has been recently presented in arXiv:1604.01259 [physics.plasm-ph]. Such magnetic fields enable fast synchrotron radiation cooling of the beam emittance of laser-plasma accelerated leptons. This recent finding opens a novel approach for design of laser-plasma FELs or colliders, where the acceleration stages are interleaved with laser-plasma emittance cooling stages. In this concept paper we present an outline of how a staged plasma-acceleration FEL could look like and discuss further studies needed to investigate the feasibility of the concept in detail

Concept of a staged FEL enabled by fast synchrotron radiation cooling of laser-plasma accelerated beam by solenoidal magnetic fields in plasma bubble

A novel method for generating GigaGauss solenoidal fields in a laser-plasma bubble, using screw-shaped laser pulses, has been recently presented. Such magnetic fields enable fast synchrotron radiation cooling of the beam emittance of laser-plasma accelerated leptons. This recent finding opens a novel approach for design of laser-plasma FELs or colliders, where the acceleration stages are interleaved with laser-plasma emittance cooling stages. In this concept paper, we present an outline of what a staged plasma-acceleration FEL could look like, and discuss further studies needed to investigate the feasibility of the concept in detail

Influence of the Production Method on Magnetization Processes of the Fe61Co10Y8Mo1B20Fe_{61}Co_{10}Y_{8}Mo_{1}B_{20} Bulk Amorphous Alloys

The aim of this paper was to show the influence of the manufacturing method of bulk amorphous alloys on the resulting magnetization processes. Samples in the form of plates were prepared by the injection or suction of liquid alloy into a copper mould. In order to determine the type and quantity of structural defects present in the bulk amorphous alloys, the indirect method, i.e. the approach to the ferromagnetic saturation, was applied. Studies revealed the presence of conglomerates of point defects, for both alloys. These defects were pinning sites of domain walls and their number, size and type was found to have a direct impact on the coercive field. Alloy produced by the suction-casting method was found to possess the highest number of these defects, and thus a higher coercive field value

THE ADESSIVE CASE IN POLISH: A COGNITIVE PERSPECTIVE ON SOME LOCATIVE PREPOSITIONS

The aim of this paper is to show that what is considered in Polish as one heterogeneous LOCA- TIVE case in the “formal” approach only on the surface seems rather complex and appears to lack any natural order. Due to the limited size of the paper, focus will be laid only on one locative case, the ADESSIVE, representing the static external locative, expressing different aspects of a relationship outside an entity and describing the “location ‘on top of’ or ‘near’, ‘owner’ or ‘in- strument’ by means of which an action is performed” (Karlsson 1999: 115). It has no single lin- guistic equivalent in Polish; instead it is represented by several prepositions, such as na + LOC ‘on’, przy + LOC ‘by’ and u + GEN ‘at’, etc., reflecting different aspects of proximity and coin- cidence in space. Taking just the case of the ADESSIVE relation, data observations based on the IPI PAN Corpus of Polish allow us to claim that although each preposition is responsible for a different aspect of the external spatial relation, they complement one another and are related in a family resemblance fashion, expressing an adessive relation