Spin-aligned RI beams via two-step fragmentation reactions
نویسندگان
چکیده
منابع مشابه
Production of Exotic (or Polarized) Low-Energy Radioactive Beams via Two Successive Nuclear Reactions: Tertiary Beams
We propose a method to produce usable amounts (1 to 100/s) of low-energy, very neutron-, proton-rich or highly-polarized radioactive nuclear beams (RNBs) via a two-stage production method which utilizes a high-intensity secondary RNB with a second production target. As an example: 7Li+9Be→ 8Li→ 8Li+9Be→ 9Li. The latter (9Li) is very difficult to produce at low energies (a few MeV/u) as it is se...
متن کاملRecent progress in emulsion technology to study fragmentation reactions of high energetic ion beams
The R&D project to study nuclear fragmentation using emulsion in attempt to improve the accuracy of dose calculation in carbon ion radiotherapy has been carried out at NIRS-HIMAC since 2003. Based on the developed techniques, we are accumulating experimental data of fragmentation reactions for various beams and target Preprint submitted to Elsevier Science 11 December 2008 ha l-0 02 77 22 9, v ...
متن کاملSpin-dependent Fragmentation Functions
A confusing variety of new and exotic fragmentation functions (FFs) is discussed recently, in particular in the context of the extraction of the third, leading twist – hitherto unknown – nucleon distribution function. This transversity distribution h1(x) (frequently also denoted δq(x) or ∆Tq(x)) involves a flip of quark chirality, and therefore, requires a second chiral-odd function to form a c...
متن کاملE cient Two-Step Estimation via Targeting
The standard description of two-step extremum estimation amounts to plugging in a first step estimator of nuisance parameters in order to simplify the optimization problem and then to deduce a user friendly estimator for the parameters of interest. This two-step procedure often induces an e ciency loss with respect to estimation of the parameters of interest. In this paper, we consider a more g...
متن کاملExperimental fragmentation studies with 12C therapy beams.
High-energy beams of (12)C ions in the range of 80-430 MeV u(-1) delivered by the heavy-ion synchrotron SIS-18 are used for radiotherapy of deep-seated localized tumors at the treatment unit at GSI Darmstadt. In order to improve the physical database, the fragmentation characteristics along the penetration path in tissue were investigated experimentally by using a water phantom as tissue-equiva...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
سال: 2013
ISSN: 0168-583X
DOI: 10.1016/j.nimb.2013.04.071