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Coulex Analysis Code – GOSIA: Current S tatus of D evelopment

This document provides an overview of the current status of GOSIA development as presented by Paweł Napiorkowski at the INTAG Workshop held at GSI on May 24-25, 2007. Key topics include the introduction of GOSIA2, improvements in interpolation methods, and the integration of advanced techniques for analyzing spectroscopic data. The document discusses the challenges faced during error estimation and minimizes the impact of complex shapes in particle detectors. It offers insights into ongoing enhancements to the GOSIA manual and operational procedures along with experimental setups in studying exotic isotopes.

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Coulex Analysis Code – GOSIA: Current S tatus of D evelopment

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  1. Coulex Analysis Code – GOSIA: Current Status of Development Paweł Napiorkowski (HIL UW -Warsaw) INTAG workshop, GSI, May 24-25, 2007

  2. Overview • What the GOSIA is. • GOSIA2 • GOSIA Manual • Interpolation can make a problem(polynomials vs. spline) • PIN option for GSI experiment INTAG workshop, GSI, May 24-25, 2007

  3. SIGMA available spectroscopic data (, BR, ) MINIMALIZATION PROCEDURE Errors estimation set of matrix elements shape parameters for individual states Quadrupole rotational invariant sum rules GOSIA COULEX Analysis Scheme Measured yields Experimental setup geometry:particle and  detectors Level scheme INTAG workshop, GSI, May 24-25, 2007

  4. GOSIA2 • GOSIA2 is intended to handle both target and projectile ”simultaneous” excitation with common normalization coefficients • ”Simultaneous” inclusion of the lines originating from the second partner and usually known spectroscopic data makes it possible to achieve a unique solution for exotic case. • For details – see upgraded manual INTAG workshop, GSI, May 24-25, 2007

  5. GOSIA HomePage @ HIL http://www.slcj.uw.edu.pl/en/81.html http://web1.pas.rochester.edu/~cline/Research/ INTAG workshop, GSI, May 24-25, 2007

  6. GOSIA mailing list To subscribe: send an e-mail to majordomo@slcj.uw.edu.pl a text message: subscribe gosia To get help, consultancy, to request a change in code… Also: Magda Zielińska: magda@slcj.uw.edu.pl Paweł Napiorkowski: pjn@slcj.uw.edu.pl INTAG workshop, GSI, May 24-25, 2007

  7. Interpolation: be carefull • Internal conversion coeficient 13 June 2006: Corrected ICC description in OP,YIEL to include use of four point interpolation and increase in number of ICC energies to 50. • Integration:Using excessively fine meshpoints in the OP,INTG step or an excessive number of subdivisions may cause convergence issues. INTAG workshop, GSI, May 24-25, 2007

  8. Polynominals Splines n=5 n=21 Polynominals vs. splines Expect a new option SPL in GOSIA1_002 soon (June 2007) INTAG workshop, GSI, May 24-25, 2007

  9. Segmented annular Si detector (position and energy?) (Θ,φ) (Θ,φ) COULEX with slow down beams • Event by event reconstruction: • to group the same scattering angle • to crate gamma spectrum for a given scattering angle Ge Target Ge INTAG workshop, GSI, May 24-25, 2007

  10. ”Virtual” particle detector M.Zielińska, 44Ar @ GANIL INTAG workshop, GSI, May 24-25, 2007

  11. ”Virtual” Detector Model for GOSIA • PIN option useful to describe very difficult shapes of the particle detector • The idea was successfully tested • Problem: σp(Θ,φ) is not Rutherford’s • But can be measured (e.g. downscaling) • Modification of PIN option in necessary -weight parameter has to be appliedto integration procedure (will be ready after summer 2007) INTAG workshop, GSI, May 24-25, 2007

  12. Experiment – a physics case • Something old, something new… • Known - to test the procedure • Unknown & exotic: to have a discover • 100Mo &102Mo INTAG workshop, GSI, May 24-25, 2007

  13. Low laying 0+ in Mo isotopes INTAG workshop, GSI, May 24-25, 2007

  14. Shape evolution in Mo isotopes M.Zielińska, K.Wrzosek,… INTAG workshop, GSI, May 24-25, 2007

  15. What is a deformation of 102Mo? ? 98Mo ? INTAG workshop, GSI, May 24-25, 2007

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