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LACK OF BEHAVIORAL EFFECTS OF HIGH-PEAK of behavioral effects of ... security classification of this page ... from an axially extracted virtual cathode oscillatorAuthors: Dennis L

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  • USAFSAM-TR-89-24 AD-A220 779

    LACK OF BEHAVIORAL EFFECTS OFHIGH-PEAK-POWER MICROWAVE PULSESFROM AN AXIALLY EXTRACTEDVIRTUAL CATHODE OSCILLATOR

    Dennis L. Hjeresen, Ph.D.Kathryn 0. Umbarger, B.A.

    Los Alamos National LaboratoryLos Alamos, NM 87545

    B. Jon Klauenberg, Ph.D. (USAFSAM/RZP)David N. Erwin, Ph.D. (USAFSAM/RZP)

    DTICELECTE

    November 1989 l24199

    Final Report for Period March 1988 - September 1988

    A Approved for public release; distribution is unlimited.

    USAF SCHOOL OF AEROSPACE MEDICINEHuman Systems Division (AFSC)Brooks Air Force Base, TX 78235-5301

    1134

  • NOTICES

    This final report was submitted jointly by personnel of theRadiation Physics Branch, Radiation Sciences Division, USAFSchool of Aerospace Medicine, Human Systems Division, AFSC,Brooks Air Force Base, Texas, under job order 7757-01-1L, and theLife Sciences Division, Los Alamos National Laboratory, LosAlamos, New Mexico. Funding for this research was provided bythe Raciation Sciences Division, USAF School of AerospaceMedicine.

    When Government drawings, specifications, or other data areused for any purpose other than in connection with a definitelyGovernment-related procurement, the United States Governmentincurs no responsibility nor any obligation whatsoever. The factthat the Government may have formulated the said drawings,specifications, or other data, is not to be regarded byimplication, or otherwise in any manner construed, as licensingthe holder or any other person or corporation; or as conveyingany rights or permission to manufacture, use, or sell anypatented invention that may in any way be related thereto.

    The animals involved in this study were procured,maintained, and used in accordance with the Animal Welfare Actand the "Guide for the Care and Use of Laboratory Animals"prepared by the Institute of Laboratory Animal Resources--NationalResearch Council.

    The Office of Public Affairs has reviewed this report, andit is releasable to the National Technical Information Service,where it will be available to the general public, includingforeign nationals.

    This report has been reviewed and is approved forpublication.

    B. JO KLAUENBERG, DAVID N. ERWIN, Ph.D.Prj SintSupervisor

    EORColonel, USAF, MC, CFSCommander

  • UNCLASSIFIEDSECURITY CLASSIFICATION OF THIS PAGE

    Form ApprovedREPORT DOCUMENTATION PAGE OMB No. 0704-0188

    la. REPORT SECURITY CLASSIFICATION lb. RESTRICTIVE MARKINGS

    Unclassified

    2a. SECURITY CLASSIFICATION AUTHORITY 3. DISTRIBUTION/AVAILABILITY OF REPORT

    Approved for public release;2b. DECLASSIFICATION/DOWNGRADING SCHEDULE distribution is unlimited.

    4. PERFORMING ORGANIZATION REPORT NUMBER(S) 5. MONITORING ORGANIZATION REPORT NUMBER(S)

    USAFSAM-TR- 89- 24

    6a. NAME OF PERFORMING ORGANIZATION 6b. OFFICE SYMBOL 7a. NAME OF MONITORING ORGANIZATIONLife Sciences Division (If applicable)Los Alamos National Laboratory I

    6c. ADDRESS (City, State, and ZIP Code) 7b. ADDRESS (City, State, and ZIP Code)

    Los Alamos, NM 87545

    8a. NAME OF FUNDING/SPONSORING 8b. OFFICE SYMBOL 9. PROCUREMENT INSTRUMENT IDENTIF-CATION NUMBERUS4t~ TGRNof Aerospace (If applicable)

    Medicine IU SAFSAM/RZP8c. ADDRESS (City, State, and ZIP Code) 10. SOURCE OF FUNDING NUMBERS

    PROGRAM PROJECT TASK WORK UNITHuman Systems Division (AFSC) ELEMENT NO. NO. NO ACCESSION NO.Brooks Air Force Base TX 78235-5301 62202F 7757 01 iL

    11. TITLE (Include Security Classification)Lack of Behavioral Effects of High-Peak-Power Microwave Pulses from an AxiallyExtracted Virtual Cathode Oscillator

    12. PERSONAL AUTHOR(S) Hjeresen, Dennis L.; Umbarger, Katherine 0.; Klauenberg, B. Jon(USAFSAM/RZP) and Erwin. David N. (USAFSAM/RZP)13a. TYPE OF REPORT 13b. TIME COVERED 14. DATE OF REPORT (Year, Month,Day) 15. PAGE COUNTFinal FROM 88/03 TO 88/09 I 1989, November 32

    16. SUPPLEMENTARY NOTATION

    A joint DOE/DOD research effort funded and directed by USAFSAM/RZP.

    17. COSATI CODES 18. SUBJECT TERMS (Continue on reverse if necessary and identify by block number)FIELD GROUP SUB-GROUP High peak-power pulsed microwaves; Nonionizing

    electromagnetic radiation; Animal behavior; Operant06 07 conditioning; Discrete-trial avoidance behavior;06 10 Memory processing

    19. ABSTRACT (Continue on reverse if necessary and identify by block number)

    ,A battery of behavioral experiments was conducted to evaluate possible biologicaleffects of high-power microwave (HPM) pulses generated by the Transformer EnergizedMegavolt Pulsed Output (TEMPO) microwave emitter, an axially extracted Virtual CathodeOscillator (VIRCATOR). Free space electromagnetic energy in the frequency range 2.01to 2.57 GHz (mean frequency = 2.11 + 0.09 SD) was radiated by conical horn in a TMOImode. The overall pulse width 2was approximately 85 ns, with maximum power densitiesranging as high as 24.11 kW/cm per pulse (mean peak-power density = 10.79 kW/cm +0.35 SEM). ..

    Exposure to HPM pulses immediately before a test session as well as at 3 intervalsduring a 30-min test session had no effects on an appetitively motivated variableinterval 10-s (VI-10) operant task. Postirradiation effects on aversively motivatedbehavior were determined with a discrete-trial avoidance behavior paradigm.

    20. DISTRIBUTION/AVAILABILITY OF ABSTRACT 21. ABSTRACT SECURITY CLASSIFICATIONMUNCLASSIFIED/UNLIMITED 0 SAME AS RPT. 0 DTIC USERS Unclassified

    22a. NAME OF RESPONSIBLE INDIVIDUAL 22b. TELEPHONE (Include Area Code) 22c. OFFICE SYMBOLB. Jon Klauenberg, Ph.D. (512) 536-2439 USAFSAM/RZP

    DD Form 1473, JUN 86 Previous editions are obsolete. SECURITY CLASSIFICATION OF THIS PAGEUNCLASSIFIED

    i

  • UNCLASSIFIED

    SECURITY CLASSIFICATION OF THIS PAGE

    19. ABSTRACT (Continued) __

    Postirradiation effects on memory processing were determin'd using a passive-avoidancetask. The aversive properties of TEMPO HPM pulses were d~termined with a passive-place-avoidance procedure. The results indicate no deleterious effects of TEMPO HPM irradiationafter Lip to 50-HPM pulses presented over a 5-mmn period.-The results suggest that peakpowe'r is not as important as average power in causing deleterious biological effects. (',tr'

    Accession For

    NTIS GRA&IDTIC TAB C1Unannounced 01Justification

    Dist Special

    UNCLASSIFIEDSECURITY CLASSIFICATION OF THIS PAGE

  • TABLE OF CONTENTS

    PageINTRODUCTION .................................................. 1

    METHODS AND MATERIALS ......................................... .2

    Subjects and Housing ....................................... 2Holding and Irradiation Cages .......................... 3Temperature Measurement ................................... 3Computer Control Systems .................................. 3Statistical Methods ........................................ 3Exposure Chamber and Electronics Housing ............... 4High-Power Microwave Exposure System ................... 4Electromagnetic Pulse Interference 5Behavioral Observation ..................................... 4

    BEHAVIORAL AND PHYSIOLOGICAL EXPERIMENTS .................. 5

    Variable-Interval Behavior ................................ 5Subjects and Environmental Conditions ............... 6Behavioral Apparatus .................................... 6"Infield" Operant Test System ....................... 6Training Schedule ....................................... 7High-Power Microwave Test Procedures ................ 7

    Discrete-Trial Avoidance Behavior ...................... 8Subjects and Environmental Conditions ............... 8Behavioral Apparatus ................................... 9Training Schedule ....................................... 9High-Power Microwave Test Procedures ................ 9

    Passive-Avoidance Memory Testing ....................... 10Subjects and Environmental Conditions ............... 10Behavioral Apparatus .................................. 11High-Power Microwave Test Procedures ................ 11

    Passive-Place-Avoidance Testing ........................ 12Subjects and Environmental Conditions ............... 12Behavioral Apparatus ................................ 12High-Power Microwave Test Procedures ................ 13

    RESULTS ...................................................... 13

    Variable-Interval Behavior After High-PowerMicrowave Irradiation ................................. 13

    High-Power Microwave Irradiation DuringVariable-Interval Behavior .......................... 14

    Discrete-Trial Avoidance Behavior ...................... 15Passive-Avoidance Memory Testing - Experiment 1 ........ 16Passive-Avoidance Memory Testing - Experiment 2 ........ 17Passive-Place-Avoidance Testing ........................ 18

    iii

  • Page

    DISCUSSION ..................................................... 19

    ACKNOWLEDGMENTS ................................................ 22

    REFERENCES ..................................................... 22

    List of Figures

    Fig.No.

    1 - Lever Press Responses in Post-High-PowerMicrowave Variable Interval Test ................... 14

    2 - Lever Press Responses in Infield Variable-Interval Test... 153 - Avoidance Response in Discrete-Trial

    Avoidance Test ....................................... 164 - Traverse Latency in Passive-Avoidance Memory

    Experiment 1 ........................................ 175 - Traverse Latency in Passive-Avoidance Memory

    Experiment 2 ........................................ 186 - Traverse Latency in Passive-Place-Avoidance

    Experiment ........................................... 19

    iv

  • LACK OF BEHAVIORAL EFFECTS OF HIGH-PEAK-POWER MICROWAVE PULSESFROM AN AXIALLY EXTRACTED VIRTUAL CATHODE OSCILLATOR

    INTRODUCTION

    - The deve

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