Study of alpha decays obtained by overall scanning method in nuclear emulsion Physics department K.Nakazawa, J.Yoshida, K.T.Tint, M.K.Soe, S.Kinbara, A.

Slides:

Advertisements

Similar presentations

1 Status report of the PEANUT analysis Giovanni De Lellis Collaboration Meeting, June 5th 2007, Maiori.

Advertisements

New results from the CHORUS Neutrino Oscillation Experiment Pasquale Migliozzi CERN XXIX International Conference on High Energy Physics UBC, Vancouver,

4-5: Radioactive Elements

Automated analysis of nuclear emulsions using new tracking technique presented by Tsutomu Fukuda （ Toho University ） Workshop on Nuclear Track Emulsion.

Nuclear Instability.

M. Dracos 1 Double Beta experiment with emulsions?

Study of double hypernuclei with a general scan Kyoto University Department of Physics Toshinao Tsunemi Masashi Hayata(Kyoto Univ.) Ken-ichi Imai (Kyoto.

OPERA brick (16215) scanning results Luisa Arrabito on behalf of Lyon Scanning Group Emulsion Workshop Nagoya 22th-23th January 2008.

Cristiano Bozza – European Emulsion Scanning Group – Nagoya Jan OPERA brick scanning by the European Scanning System.

Automatic Track Follow Program A program to trace a given set of tracks automatically –Event location for PEANUT and OPERA –DONUT “not-located” events.

NetScan for BL118 PEANUT Fermilab 22-23/Jan/2007.

Stack to Stack connection O.Sato. Motivation Emulsion coordinate aligned to TT coordinate by Komatsu :: CTransEmulToTT(*); Emulsion tracks.

Reconstruction of neutrino interactions in PEANUT in general scanning (unbiased) mode Giovanni De Lellis on behalf of Andrea Russo Naples University.

Kouji Narita Nagoya University, Japan CHORUS collaboration Study of charm production in neutrino interactions.

Momentum O.Sato. Chant Dt momentum(GBTR) check(‘96+’97) 0muEventcheck#track#match#DtDt/trackDt/match kink Vee.

Film Storage and book-keeping Scanning Quality Control Cosmic Ray Density Vertex Confirmation Vertex Location WG4 summary.

Vertex localization in Lyon Emulsion Workshop 7th-9th Dec. 2006, Nagoya Luisa Arrabito – IPN Lyon.

Evaluation of SySal efficiencies for 1  sample Chorus Collaboration Meeting Ishigaki,7-8 April 2003 Emiliano Barbuto, Chiara Sirignano, Salvatore Sorrentino.

Umut Kose Neutrino interaction location in the OPERA Experiment New Development of Flavor Physics, , Tennomaru, Gamagori Nagoya University.

Analysis of Light Single-  Hypernuclei Events in Nuclear Emulsion Detected with Overall-scanning Method MYINT KYAW SOE, Kazuma NAKAZAWA, Kaoru HOSHINO,

Comments on OPERA OPERA is going on. We will have good Tau neutrino interactions within years, if νμ － ντ oscillation is the real solution. New Techniques.

SCT offline monitoring Helen Hayward. outline Results using Else’s new non-misaligned data (dig.trtbarrel_1111*root) Looking at efficiency dependence.

The first application of automatic scanning to vertex location T.Toshito (Nagoya Univ.) 7. Mar. 2002

Status of the OPERA experiment Yoshiaki Nonoyama Nagoya Univ.

EM shower reconstruction and located neutrino event analysis Ciro Pistillo (Bern LHEP) on behalf of the Swiss OPERA groups.

DONUT Reinhard Schwienhorst DOE review 7/28/1999.

© JP 1  alpha e-e-  beta  gamma Marie Curie Antoine-Henri Becquerel (1852 – 1908) α,  and  RADIATION.

Nuclear Fission Half-lives, reactions and energy.

The Nucleus and Radioactivity

Alpha Decay. Radioactive Decay Alpha Decay Radioactive Decay Alpha Decay Beta Decay.

1 Chapter 9 Nuclear Radiation Copyright © 2009 by Pearson Education, Inc. 9.4 Half-Life of a Radioisotope 9.5 Medical Applications Using Radioactivity.

1 RUN 2008 OPERA events: Status Report M. Ieva on behalf of Bari Emulsion Lab OPERA Collaboration Meeting, April 1st - 5th, 2009.

LNGS 25 May 2005 G. Sirri – INFN BO1 Test of a dry objective with correction collar Dry objectives having an high numerical aperture give aberration when.

Nuclear Chemistry Chapter 25 What so special?. Radioactivity Discovered accidentally using Uranium salts Without sunlight, Uranium could fog a photographic.

Chapter 9 Nuclear Radiation

P n  Systematic Study of Double Strangeness System by an Emulsion-Counter Hybrid Method Experimental motivation. 0. Previous experiment E373 (KEK-PS)

CALORIMETER system for the CBM detector Ivan Korolko (ITEP Moscow) CBM Collaboration meeting, October 2004.

Status of automatic scanning and vertex recognition at Toho Univ. September 27, Gyeongsang National University H. Shibuya, S. Ogawa, S. Fukunaga,

N. Saoulidou & G. Tzanakos1 Event Location N. Saoulidou and G. Tzanakos University of Athens, Department of Physics, Div. Of Nuclear & Particle Physics.

ICP 9/28/12 Half-life. Warmup Write a balanced nuclear equation for the alpha decay of Uranium-238.

Stylization and Abstraction of Photographs Doug Decarlo and Anthony Santella.

DE/dX measurement by OPERA film Tsutomu Fukuda (Nagoya Univ) Emulsion work shop (11/12,2005)

List the following electromagnetic spectrum wave types in order from lowest energy to highest energy: Gamma rays Infrared Microwaves Radiowaves Ultraviolet.

Sec. 4- Tools and Procedures Metric system-decimal system of measurement whose units are based on certain physical standards –Scaled on multiples of ten.

Nuclear Chemistry Nuclear Reactions. Reactions Chemical Reactions- atoms want stable electron configuration Nuclear Reaction- unstable isotopes (radioisotope)

Nuclear Track Emulsion Workshop Romania Nuclear emulsion with molybdenum filling for 2  -decay observation V.D.Ashitkov, A.S.Barabash, V.J.Bradnova,

Dark Matter Search Using High Resolution Emulsion M. University.

Study of hadron interactions in OPERA-like bricks Aim: background study of   h, hhh decays 4 th September 2012 H. Shibuya, H. Ishida, T. Matsuo, T. Fukuda,

Event location and decay search in Switzerland Swiss group.

Muon absolute flux measurement in anti-neutrino mode A.Ariga 1, C. Pistillo 1, S. Aoki 2 1 University of Bern, 2 Kobe University.

Slide 1 of 31 Copyright Pearson Prentice Hall Biology.

OPERA Physics Coordination, CERN, 03/05/2006 Effect of  and  radiation on the on-line emulsion scanning M. Cozzi for the Bologna group.

European Scanning System: status report. DRY Fill factor 92.4 ± 1.6 % DB-driven Scan-back and Total Scan in Bari OIL Fill factor 93.1 ± 1.2 % Brick #8,

NUCLEAR FRAGMENT SEARCH IN HADRON INTERACTIONS JIRO KAWADA(LHEP, BERN) ANIS BEN DHAHBI (F.S.T *, LHEP) JONAS KNUESEL (LHEP) * Faculty Science of Tunis.

N. Saoulidou & G. Tzanakos1 Analysis for new Period 3 Events N. Saoulidou and G. Tzanakos University of Athens, Department of Physics’ Div. Of Nuclear.

Download the Minerva software at Read through the introduction and, using the Minerva help and instructions.

Scanning systems for double strangeness nuclei in nuclear emulsion Junya Yoshida Hiroki Ito, Shinji Kinbara, Hidetaka Kobayashi, Daisuke Nakashima, Kazuma.

By the end of this presentation, you should be able to: Select and use Coulomb’s law to determine the force of repulsion, and Newton’s law of gravitation.

Light Microscope.

Development of PID method in nuclear emulsion Shinji KINBARA Phys. Dept., Gifu Univ., JAPAN Outline 1. Motivation 2. Experiment at RIKEN (NP1406 RRC-32-02)

LIGHT BACKSCATTERING ANALYSIS of Textured Silicon SAMPLES

Efficient transfer reaction method with RI BEams

Nuclear Chemistry Nuclear chemistry is the study of the structure of atomic nuclei and the changes.

Paul J. Campagnola, Mei-de Wei, Aaron Lewis, Leslie M. Loew

Introduction to Cells: How Were Cells Discovered?

2.3a: Introduction to Cells: How Were Cells Discovered?

Study of charm hadroproduction Tau neutrino production at CERN SPS

RADIATION AND HALF-LIFE

I will be able to identify scientific tools.

Presentation transcript:

Study of alpha decays obtained by overall scanning method in nuclear emulsion Physics department K.Nakazawa, J.Yoshida, K.T.Tint, M.K.Soe, S.Kinbara, A. Mishina, H.Ito, Y.Endo, H.Kobayashi Aye Moh Moh Theint Gifu University

Outlines  Motivation  Events Detection of Overall Scanning method in nuclear emulsion  Detection of alpha decays in nuclear emulsion  Checking Area of Emulsion Plate  Density of alpha decays in nuclear emulsion  Summary

Motivation  Overall scanning is a new method that aims for collecting more double-lambda hypernuclear events in nuclear emulsion.  Therefore, we had collected information, alpha decay events that are obtained by overall scanning method in nuclear emulsion to check current detection efficiency.  It is one of the aids to develop our new scanning method.  After developing our new scanning method, we will discover more double-lambda hypernuclear events.  Now, we use overall scanning method to detect events in the nuclear emulsion.

Introduction  In the overall scanning, an image process takes hypernuclear events which have multi tracks and vertices.  The detection system of the double-lambda hypernuclear events is the same performance in the case of alpha decays in nuclear emulsion.  Besides, natural radioactive alpha decays are plenty in nuclear emulsion.  Therefore, alpha decays are good samples to check the current detection efficiency of our method in nuclear emulsion.

Emulsion plate Detected images from overall-scanning Automatic scanning system Events Detection of Overall Scanning method in nuclear emulsion

Mod #49, pl #9 60mm 30mm Checking Area of Emulsion Plate 87alpha decays (45 four tracks, 42 five tracks ) Beam exposed; scan volume => 12.58cm 2 *0.9mm We had checked vertex images from two areas of an emulsion plate; 258 alpha decays (98 four tracks, 160five tracks) No Beam ; scan volume => 8.67cm 2 *0.9mm

No beam exposed area Beam exposed area  We can clearly see that there are too much noises in the beam area of the emulsion plate. Under the same condition of microscope, lighting and procedure

Detection of alpha decays in nuclear emulsion  We can see the images of alpha obtained from decay chain of thorium and uranium series in nuclear emulsion as shown in figures.  Five tracks alpha decay of Thorium series could be observed in nuclear emulsion.  In the decay chain of uranium, four tracks alpha decay can be seen in nuclear emulsion.

Beam exposed (12.58cm 2 ) No Beam (8.67cm 2 ) Density of 5tracks alpha decay Density of 4-tracks alpha decay Density of alpha decays in nuclear emulsion  We had found that the detection efficiency of the beam area and no beam area is different.  Moreover, for 5 tracks alpha decay, detection efficiency of beam exposed area is 5.59 times smaller than that of the no beam exposed area.  Similarly, for 4 tracks alpha decay, detection efficiency of beam exposed area is 3.16 times smaller than that of the no beam exposed area.

Summary  These images of beam exposed area and no beam exposed were picked out under the same condition of microscope, lighting and procedure.  After checking alpha decays, we had found that there are different detection efficiencies in these two areas of the emulsion plate.  We had checked the images that are obtained from the two types of areas; beam exposed area and no beam exposed area.  So we concern that we can’t detect some double lambda hypernuclear events in nuclear emulsion as in the case of alpha decay.  We lost the detection of some alpha decay events in the beam exposed area of the emulsion plate.  After developing our method, we will find more double lambda hypernuclear events.